399780925017 has 8 divisors (see below), whose sum is σ = 564396600096. Its totient is φ = 250842933312.

The previous prime is 399780925007. The next prime is 399780925067. The reversal of 399780925017 is 710529087993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 399780925017 - 2⁶ = 399780924953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (399780925007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3919420783 + ... + 3919420884.

It is an arithmetic number, because the mean of its divisors is an integer number (70549575012).

Almost surely, 2^399780925017 is an apocalyptic number.

It is an amenable number.

399780925017 is a deficient number, since it is larger than the sum of its proper divisors (164615675079).

399780925017 is a wasteful number, since it uses less digits than its factorization.

399780925017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7838841687.

The product of its (nonzero) digits is 8573040, while the sum is 60.

The spelling of 399780925017 in words is "three hundred ninety-nine billion, seven hundred eighty million, nine hundred twenty-five thousand, seventeen".