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1249384089 = 3715865653
BaseRepresentation
bin100101001111000…
…0001011010011001
310020001221021202210
41022132001122121
510024320242324
6323550345333
742650406132
oct11236013231
93201837683
101249384089
11591276838
122aa4bb249
1316bac5435
14bbd06c89
1574a42d29
hex4a781699

1249384089 has 8 divisors (see below), whose sum is σ = 1689308352. Its totient is φ = 821191280.

The previous prime is 1249384063. The next prime is 1249384091. The reversal of 1249384089 is 9804839421.

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 1249384089 - 25 = 1249384057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1249384099) 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, 2932614 + ... + 2933039.

It is an arithmetic number, because the mean of its divisors is an integer number (211163544).

Almost surely, 21249384089 is an apocalyptic number.

It is an amenable number.

1249384089 is a deficient number, since it is larger than the sum of its proper divisors (439924263).

1249384089 is an equidigital number, since it uses as much as digits as its factorization.

1249384089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5865727.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 1249384089 is about 35346.6276892153. The cubic root of 1249384089 is about 1077.0403906127.

The spelling of 1249384089 in words is "one billion, two hundred forty-nine million, three hundred eighty-four thousand, eighty-nine".

Divisors: 1 3 71 213 5865653 17596959 416461363 1249384089