307139969 has 8 divisors (see below), whose sum is σ = 328248288. Its totient is φ = 286369600.

The previous prime is 307139951. The next prime is 307139977. The reversal of 307139969 is 969931703.

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 307139969 - 2⁸ = 307139713 is a prime.

It is a super-2 number, since 2×307139969² = 188669921114641922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (307139939) 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, 82607 + ... + 86244.

It is an arithmetic number, because the mean of its divisors is an integer number (41031036).

Almost surely, 2^307139969 is an apocalyptic number.

It is an amenable number.

307139969 is a deficient number, since it is larger than the sum of its proper divisors (21108319).

307139969 is a wasteful number, since it uses less digits than its factorization.

307139969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168975.

The product of its (nonzero) digits is 275562, while the sum is 47.

The square root of 307139969 is about 17525.4092391590. The cubic root of 307139969 is about 674.7021778970.

The spelling of 307139969 in words is "three hundred seven million, one hundred thirty-nine thousand, nine hundred sixty-nine".