399442941126 has 48 divisors (see below), whose sum is σ = 876252854880. Its totient is φ = 131490817920.

The previous prime is 399442941113. The next prime is 399442941127. The reversal of 399442941126 is 621149244993.

399442941126 is a `hidden beast` number, since 3 + 9 + 94 + 429 + 4 + 1 + 126 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399442941127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1163391 + ... + 1467093.

It is an arithmetic number, because the mean of its divisors is an integer number (18255267810).

Almost surely, 2^399442941126 is an apocalyptic number.

399442941126 is an abundant number, since it is smaller than the sum of its proper divisors (476809913754).

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

399442941126 is a wasteful number, since it uses less digits than its factorization.

399442941126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304621 (or 304618 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The spelling of 399442941126 in words is "three hundred ninety-nine billion, four hundred forty-two million, nine hundred forty-one thousand, one hundred twenty-six".