309413942 has 8 divisors (see below), whose sum is σ = 464927016. Its totient is φ = 154438272.

The previous prime is 309413927. The next prime is 309413969. The reversal of 309413942 is 249314903.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132908 + ... + 135215.

It is an arithmetic number, because the mean of its divisors is an integer number (58115877).

Almost surely, 2^309413942 is an apocalyptic number.

309413942 is a deficient number, since it is larger than the sum of its proper divisors (155513074).

309413942 is a wasteful number, since it uses less digits than its factorization.

309413942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268702.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 309413942 is about 17590.1660594777. The cubic root of 309413942 is about 676.3631835182.

The spelling of 309413942 in words is "three hundred nine million, four hundred thirteen thousand, nine hundred forty-two".