399748556423008 has 192 divisors, whose sum is σ = 872639047526400. Its totient is φ = 179116646492160.

The previous prime is 399748556422979. The next prime is 399748556423017. The reversal of 399748556423008 is 800324655847993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6172451235 + ... + 6172515997.

It is an arithmetic number, because the mean of its divisors is an integer number (4544995039200).

Almost surely, 2^{399748556423008} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399748556423008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (436319523763200).

399748556423008 is an abundant number, since it is smaller than the sum of its proper divisors (472890491103392).

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

399748556423008 is a wasteful number, since it uses less digits than its factorization.

399748556423008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68005 (or 67997 counting only the distinct ones).

The product of its (nonzero) digits is 1567641600, while the sum is 73.

The spelling of 399748556423008 in words is "three hundred ninety-nine trillion, seven hundred forty-eight billion, five hundred fifty-six million, four hundred twenty-three thousand, eight".