309947954 has 16 divisors (see below), whose sum is σ = 493093440. Its totient is φ = 145804560.

The previous prime is 309947941. The next prime is 309947959. The reversal of 309947954 is 459749903.

It is a super-2 number, since 2×309947954² = 192135468377572232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (309947959) 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, 52424 + ... + 58035.

It is an arithmetic number, because the mean of its divisors is an integer number (30818340).

Almost surely, 2^309947954 is an apocalyptic number.

309947954 is a deficient number, since it is larger than the sum of its proper divisors (183145486).

309947954 is a wasteful number, since it uses less digits than its factorization.

309947954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110545.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The square root of 309947954 is about 17605.3387925368. The cubic root of 309947954 is about 676.7520675968.

The spelling of 309947954 in words is "three hundred nine million, nine hundred forty-seven thousand, nine hundred fifty-four".