399185036346 has 16 divisors (see below), whose sum is σ = 798479212608. Its totient is φ = 133043488800.

The previous prime is 399185036281. The next prime is 399185036357. The reversal of 399185036346 is 643630581993.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4499910 + ... + 4587761.

It is an arithmetic number, because the mean of its divisors is an integer number (49904950788).

Almost surely, 2^399185036346 is an apocalyptic number.

399185036346 is an abundant number, since it is smaller than the sum of its proper divisors (399294176262).

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

399185036346 is a wasteful number, since it uses less digits than its factorization.

399185036346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9094997.

The product of its (nonzero) digits is 12597120, while the sum is 57.

The spelling of 399185036346 in words is "three hundred ninety-nine billion, one hundred eighty-five million, thirty-six thousand, three hundred forty-six".