396984686 has 32 divisors (see below), whose sum is σ = 708238080. Its totient is φ = 163348416.

The previous prime is 396984671. The next prime is 396984691. The reversal of 396984686 is 686489693.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29930 + ... + 41106.

It is an arithmetic number, because the mean of its divisors is an integer number (22132440).

Almost surely, 2^396984686 is an apocalyptic number.

396984686 is a deficient number, since it is larger than the sum of its proper divisors (311253394).

396984686 is a wasteful number, since it uses less digits than its factorization.

396984686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11288.

The product of its digits is 13436928, while the sum is 59.

The square root of 396984686 is about 19924.4745476512. The cubic root of 396984686 is about 734.9502093471.

The spelling of 396984686 in words is "three hundred ninety-six million, nine hundred eighty-four thousand, six hundred eighty-six".