399303969776 has 20 divisors (see below), whose sum is σ = 791643336792. Its totient is φ = 195008915136.

The previous prime is 399303969767. The next prime is 399303969853. The reversal of 399303969776 is 677969303993.

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, 290191151 + ... + 290192526.

Almost surely, 2^399303969776 is an apocalyptic number.

It is an amenable number.

399303969776 is a deficient number, since it is larger than the sum of its proper divisors (392339367016).

399303969776 is a wasteful number, since it uses less digits than its factorization.

399303969776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580383728 (or 580383722 counting only the distinct ones).

The product of its (nonzero) digits is 312487308, while the sum is 71.

The spelling of 399303969776 in words is "three hundred ninety-nine billion, three hundred three million, nine hundred sixty-nine thousand, seven hundred seventy-six".