399297852117 has 48 divisors (see below), whose sum is σ = 622826126208. Its totient is φ = 245851182720.

The previous prime is 399297852077. The next prime is 399297852127. The reversal of 399297852117 is 711258792993.

399297852117 is a `hidden beast` number, since 3 + 9 + 9 + 2 + 97 + 8 + 521 + 17 = 666.

It is not a de Polignac number, because 399297852117 - 2²² = 399293657813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399297852127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 804343 + ... + 1202315.

It is an arithmetic number, because the mean of its divisors is an integer number (12975544296).

Almost surely, 2^399297852117 is an apocalyptic number.

399297852117 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

399297852117 is a deficient number, since it is larger than the sum of its proper divisors (223528274091).

399297852117 is a wasteful number, since it uses less digits than its factorization.

399297852117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398170 (or 398167 counting only the distinct ones).

The product of its digits is 17146080, while the sum is 63.

The spelling of 399297852117 in words is "three hundred ninety-nine billion, two hundred ninety-seven million, eight hundred fifty-two thousand, one hundred seventeen".