399536801772 has 48 divisors (see below), whose sum is σ = 943114727520. Its totient is φ = 131628423168.

The previous prime is 399536801767. The next prime is 399536801803. The reversal of 399536801772 is 277108635993.

It is a super-3 number, since 3×399536801772³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2565528 + ... + 2716800.

It is an arithmetic number, because the mean of its divisors is an integer number (19648223490).

Almost surely, 2^399536801772 is an apocalyptic number.

It is an amenable number.

399536801772 is an abundant number, since it is smaller than the sum of its proper divisors (543577925748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399536801772 is a wasteful number, since it uses less digits than its factorization.

399536801772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153842 (or 153840 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 60.

The spelling of 399536801772 in words is "three hundred ninety-nine billion, five hundred thirty-six million, eight hundred one thousand, seven hundred seventy-two".