309578734404 has 45 divisors (see below), whose sum is σ = 809326145551. Its totient is φ = 103189573080.

The previous prime is 309578734363. The next prime is 309578734453. The reversal of 309578734404 is 404437875903.

The square root of 309578734404 is 556398.

It is a perfect power (a square), and thus also a powerful number.

309578734404 is a `hidden beast` number, since 30 + 9 + 578 + 7 + 34 + 4 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 9999709 + ... + 10030619.

Almost surely, 2^309578734404 is an apocalyptic number.

309578734404 is the 556398-th square number.

It is an amenable number.

309578734404 is an abundant number, since it is smaller than the sum of its proper divisors (499747411147).

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

309578734404 is an frugal number, since it uses more digits than its factorization.

309578734404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61838 (or 30916 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 54.

The spelling of 309578734404 in words is "three hundred nine billion, five hundred seventy-eight million, seven hundred thirty-four thousand, four hundred four".