321940490404 has 81 divisors (see below), whose sum is σ = 618427123587. Its totient is φ = 146579329728.

The previous prime is 321940490383. The next prime is 321940490461. The reversal of 321940490404 is 404094049123.

The square root of 321940490404 is 567398.

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

It can be written as a sum of positive squares in 4 ways, for example, as 103814128804 + 218126361600 = 322202^2 + 467040^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2050576294 + ... + 2050576450.

Almost surely, 2^321940490404 is an apocalyptic number.

321940490404 is the 567398-th square number.

It is an amenable number.

321940490404 is a deficient number, since it is larger than the sum of its proper divisors (296486633183).

321940490404 is a wasteful number, since it uses less digits than its factorization.

321940490404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 321940490404 in words is "three hundred twenty-one billion, nine hundred forty million, four hundred ninety thousand, four hundred four".