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349252389 = 32615471163
BaseRepresentation
bin10100110100010…
…010101100100101
3220100011212012200
4110310102230211
51203402034024
654353405113
711440411353
oct2464225445
9810155180
10349252389
1116a164542
1298b69799
1357483b25
14345547d3
15209dc2c9
hex14d12b25

349252389 has 24 divisors (see below), whose sum is σ = 514124832. Its totient is φ = 228402720.

The previous prime is 349252331. The next prime is 349252399. The reversal of 349252389 is 983252943.

It is a happy number.

349252389 is a `hidden beast` number, since 3 + 49 + 2 + 523 + 89 = 666.

It is not a de Polignac number, because 349252389 - 213 = 349244197 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349252399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 299722 + ... + 300884.

It is an arithmetic number, because the mean of its divisors is an integer number (21421868).

Almost surely, 2349252389 is an apocalyptic number.

It is an amenable number.

349252389 is a deficient number, since it is larger than the sum of its proper divisors (164872443).

349252389 is a wasteful number, since it uses less digits than its factorization.

349252389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777 (or 1774 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 349252389 is about 18688.2955081516. The cubic root of 349252389 is about 704.2277404602.

The spelling of 349252389 in words is "three hundred forty-nine million, two hundred fifty-two thousand, three hundred eighty-nine".

Divisors: 1 3 9 61 183 547 549 1163 1641 3489 4923 10467 33367 70943 100101 212829 300303 636161 638487 1908483 5725449 38805821 116417463 349252389