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149389 = 316179
BaseRepresentation
bin100100011110001101
321120220221
4210132031
514240024
63111341
71161352
oct443615
9246827
10149389
11a2269
1272551
1352cc6
143c629
152e3e4
hex2478d

149389 has 8 divisors (see below), whose sum is σ = 158720. Its totient is φ = 140400.

The previous prime is 149381. The next prime is 149393. The reversal of 149389 is 983941.

149389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149389 - 23 = 149381 is a prime.

It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 149389 = 83 + 533 = 293 + 503.

149389 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1852 + ... + 1930.

It is an arithmetic number, because the mean of its divisors is an integer number (19840).

2149389 is an apocalyptic number.

It is an amenable number.

149389 is a deficient number, since it is larger than the sum of its proper divisors (9331).

149389 is an equidigital number, since it uses as much as digits as its factorization.

149389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171.

The product of its digits is 7776, while the sum is 34.

The square root of 149389 is about 386.5087321135. The cubic root of 149389 is about 53.0606875736.

The spelling of 149389 in words is "one hundred forty-nine thousand, three hundred eighty-nine".

Divisors: 1 31 61 79 1891 2449 4819 149389