309955344 has 40 divisors (see below), whose sum is σ = 801630240. Its totient is φ = 103200768.

The previous prime is 309955319. The next prime is 309955361. The reversal of 309955344 is 443559903.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 309955296 and 309955305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45744 + ... + 52080.

It is an arithmetic number, because the mean of its divisors is an integer number (20040756).

Almost surely, 2^309955344 is an apocalyptic number.

It is an amenable number.

309955344 is an abundant number, since it is smaller than the sum of its proper divisors (491674896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

309955344 is a wasteful number, since it uses less digits than its factorization.

309955344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367 (or 7361 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 42.

The square root of 309955344 is about 17605.5486708026. The cubic root of 309955344 is about 676.7574460891.

It can be divided in two parts, 309 and 955344, that added together give a triangular number (955653 = T₁₃₈₂).

The spelling of 309955344 in words is "three hundred nine million, nine hundred fifty-five thousand, three hundred forty-four".