399240050090 has 32 divisors (see below), whose sum is σ = 835214060160. Its totient is φ = 134562262464.

The previous prime is 399240050089. The next prime is 399240050113. The reversal of 399240050090 is 90050042993.

It is an unprimeable number.

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, 48330017 + ... + 48338276.

It is an arithmetic number, because the mean of its divisors is an integer number (26100439380).

Almost surely, 2^399240050090 is an apocalyptic number.

399240050090 is an abundant number, since it is smaller than the sum of its proper divisors (435974010070).

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

399240050090 is a wasteful number, since it uses less digits than its factorization.

399240050090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96668366.

The product of its (nonzero) digits is 87480, while the sum is 41.

The spelling of 399240050090 in words is "three hundred ninety-nine billion, two hundred forty million, fifty thousand, ninety".