399889730215995 has 128 divisors (see below), whose sum is σ = 698661691392000. Its totient is φ = 194565420403200.

The previous prime is 399889730215961. The next prime is 399889730216003. The reversal of 399889730215995 is 599512037988993.

It is a happy number.

It is not a de Polignac number, because 399889730215995 - 2¹⁴ = 399889730199611 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10482293181 + ... + 10482331329.

It is an arithmetic number, because the mean of its divisors is an integer number (5458294464000).

Almost surely, 2^{399889730215995} is an apocalyptic number.

399889730215995 is a deficient number, since it is larger than the sum of its proper divisors (298771961176005).

399889730215995 is a wasteful number, since it uses less digits than its factorization.

399889730215995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44041.

The product of its (nonzero) digits is 11904278400, while the sum is 87.

The spelling of 399889730215995 in words is "three hundred ninety-nine trillion, eight hundred eighty-nine billion, seven hundred thirty million, two hundred fifteen thousand, nine hundred ninety-five".