399246145938 has 32 divisors (see below), whose sum is σ = 895997963520. Its totient is φ = 131764402800.

The previous prime is 399246145901. The next prime is 399246145973. The reversal of 399246145938 is 839541642993.

399246145938 is a `hidden beast` number, since 3 + 9 + 9 + 2 + 4 + 614 + 5 + 9 + 3 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36595770 + ... + 36606677.

It is an arithmetic number, because the mean of its divisors is an integer number (27999936360).

Almost surely, 2^399246145938 is an apocalyptic number.

399246145938 is an abundant number, since it is smaller than the sum of its proper divisors (496751817582).

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

399246145938 is a wasteful number, since it uses less digits than its factorization.

399246145938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73202559 (or 73202553 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 63.

The spelling of 399246145938 in words is "three hundred ninety-nine billion, two hundred forty-six million, one hundred forty-five thousand, nine hundred thirty-eight".