309749504604 has 24 divisors (see below), whose sum is σ = 722759240448. Its totient is φ = 103248349680.

The previous prime is 309749504599. The next prime is 309749504639. The reversal of 309749504604 is 406405947903.

It is a happy number.

It is a congruent number.

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, 972189 + ... + 1250859.

It is an arithmetic number, because the mean of its divisors is an integer number (30114968352).

Almost surely, 2^309749504604 is an apocalyptic number.

It is an amenable number.

309749504604 is an abundant number, since it is smaller than the sum of its proper divisors (413009735844).

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

309749504604 is a wasteful number, since it uses less digits than its factorization.

309749504604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371305 (or 371303 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 309749504604 in words is "three hundred nine billion, seven hundred forty-nine million, five hundred four thousand, six hundred four".