396699271878 has 64 divisors (see below), whose sum is σ = 984179589120. Its totient is φ = 103800154752.

The previous prime is 396699271853. The next prime is 396699271883. The reversal of 396699271878 is 878172996693.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2791113 + ... + 2929796.

It is an arithmetic number, because the mean of its divisors is an integer number (15377806080).

Almost surely, 2^396699271878 is an apocalyptic number.

396699271878 is an abundant number, since it is smaller than the sum of its proper divisors (587480317242).

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

396699271878 is a wasteful number, since it uses less digits than its factorization.

396699271878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721061.

The product of its digits is 493807104, while the sum is 75.

The spelling of 396699271878 in words is "three hundred ninety-six billion, six hundred ninety-nine million, two hundred seventy-one thousand, eight hundred seventy-eight".