399385150922 has 16 divisors (see below), whose sum is σ = 615625346952. Its totient is φ = 194207431680.

The previous prime is 399385150921. The next prime is 399385150939. The reversal of 399385150922 is 229051583993.

It can be written as a sum of positive squares in 4 ways, for example, as 37523951521 + 361861199401 = 193711^2 + 601549^2 .

It is a super-4 number, since 4×399385150922⁴ (a number of 48 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (399385150921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7656263 + ... + 7708250.

Almost surely, 2^399385150922 is an apocalyptic number.

399385150922 is a deficient number, since it is larger than the sum of its proper divisors (216240196030).

399385150922 is a wasteful number, since it uses less digits than its factorization.

399385150922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15364873.

The product of its (nonzero) digits is 5248800, while the sum is 56.

The spelling of 399385150922 in words is "three hundred ninety-nine billion, three hundred eighty-five million, one hundred fifty thousand, nine hundred twenty-two".