396542886 has 16 divisors (see below), whose sum is σ = 818669568. Its totient is φ = 127917000.

The previous prime is 396542879. The next prime is 396542899. The reversal of 396542886 is 688245693.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1065790 + ... + 1066161.

It is an arithmetic number, because the mean of its divisors is an integer number (51166848).

Almost surely, 2^396542886 is an apocalyptic number.

396542886 is an abundant number, since it is smaller than the sum of its proper divisors (422126682).

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

396542886 is a wasteful number, since it uses less digits than its factorization.

396542886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131987.

The product of its digits is 2488320, while the sum is 51.

The square root of 396542886 is about 19913.3845942873. The cubic root of 396542886 is about 734.6774687432.

The spelling of 396542886 in words is "three hundred ninety-six million, five hundred forty-two thousand, eight hundred eighty-six".