399414494480 has 20 divisors (see below), whose sum is σ = 928638699852. Its totient is φ = 159765797760.

The previous prime is 399414494467. The next prime is 399414494509. The reversal of 399414494480 is 84494414993.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 76226792464 + 323187702016 = 276092^2 + 568496^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 2496340511 + ... + 2496340670.

Almost surely, 2^399414494480 is an apocalyptic number.

It is an amenable number.

399414494480 is an abundant number, since it is smaller than the sum of its proper divisors (529224205372).

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

399414494480 is a wasteful number, since it uses less digits than its factorization.

399414494480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4992681194 (or 4992681188 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 59.

The spelling of 399414494480 in words is "three hundred ninety-nine billion, four hundred fourteen million, four hundred ninety-four thousand, four hundred eighty".