399780454630 has 16 divisors (see below), whose sum is σ = 720771125760. Its totient is φ = 159653002432.

The previous prime is 399780454613. The next prime is 399780454663. The reversal of 399780454630 is 36454087993.

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, 32390950 + ... + 32403289.

It is an arithmetic number, because the mean of its divisors is an integer number (45048195360).

Almost surely, 2^399780454630 is an apocalyptic number.

399780454630 is a deficient number, since it is larger than the sum of its proper divisors (320990671130).

399780454630 is a wasteful number, since it uses less digits than its factorization.

399780454630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64794863.

The product of its (nonzero) digits is 19595520, while the sum is 58.

The spelling of 399780454630 in words is "three hundred ninety-nine billion, seven hundred eighty million, four hundred fifty-four thousand, six hundred thirty".