399417435996 has 48 divisors (see below), whose sum is σ = 938641334400. Its totient is φ = 132188991552.

The previous prime is 399417435941. The next prime is 399417435997. The reversal of 399417435996 is 699534714993.

It is a self number, because there is not a number n which added to its sum of digits gives 399417435996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399417435997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1236570 + ... + 1525758.

It is an arithmetic number, because the mean of its divisors is an integer number (19555027800).

Almost surely, 2^399417435996 is an apocalyptic number.

It is an amenable number.

399417435996 is an abundant number, since it is smaller than the sum of its proper divisors (539223898404).

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

399417435996 is a wasteful number, since it uses less digits than its factorization.

399417435996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290018 (or 290016 counting only the distinct ones).

The product of its digits is 198404640, while the sum is 69.

The spelling of 399417435996 in words is "three hundred ninety-nine billion, four hundred seventeen million, four hundred thirty-five thousand, nine hundred ninety-six".