399061697590 has 32 divisors (see below), whose sum is σ = 731020749120. Its totient is φ = 156816307200.

The previous prime is 399061697561. The next prime is 399061697591. The reversal of 399061697590 is 95796160993.

It is a super-2 number, since 2×399061697590² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399061697591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800595 + ... + 1199614.

It is an arithmetic number, because the mean of its divisors is an integer number (22844398410).

Almost surely, 2^399061697590 is an apocalyptic number.

399061697590 is a deficient number, since it is larger than the sum of its proper divisors (331959051530).

399061697590 is a wasteful number, since it uses less digits than its factorization.

399061697590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000568.

The product of its (nonzero) digits is 24800580, while the sum is 64.

The spelling of 399061697590 in words is "three hundred ninety-nine billion, sixty-one million, six hundred ninety-seven thousand, five hundred ninety".