309345494 has 8 divisors (see below), whose sum is σ = 480018960. Its totient is φ = 149339176.

The previous prime is 309345467. The next prime is 309345511. The reversal of 309345494 is 494543903.

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, 2666714 + ... + 2666829.

It is an arithmetic number, because the mean of its divisors is an integer number (60002370).

Almost surely, 2^309345494 is an apocalyptic number.

309345494 is a deficient number, since it is larger than the sum of its proper divisors (170673466).

309345494 is a wasteful number, since it uses less digits than its factorization.

309345494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5333574.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 309345494 is about 17588.2203192933. The cubic root of 309345494 is about 676.3133052213.

The spelling of 309345494 in words is "three hundred nine million, three hundred forty-five thousand, four hundred ninety-four".