396861916 has 12 divisors (see below), whose sum is σ = 757645560. Its totient is φ = 180391760.

The previous prime is 396861877. The next prime is 396861961. The reversal of 396861916 is 619168693.

It is a self number, because there is not a number n which added to its sum of digits gives 396861916.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 4509751 + ... + 4509838.

It is an arithmetic number, because the mean of its divisors is an integer number (63137130).

Almost surely, 2^396861916 is an apocalyptic number.

It is an amenable number.

396861916 is a deficient number, since it is larger than the sum of its proper divisors (360783644).

396861916 is a wasteful number, since it uses less digits than its factorization.

396861916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9019604 (or 9019602 counting only the distinct ones).

The product of its digits is 419904, while the sum is 49.

The square root of 396861916 is about 19921.3934251598. The cubic root of 396861916 is about 734.8744388843.

The spelling of 396861916 in words is "three hundred ninety-six million, eight hundred sixty-one thousand, nine hundred sixteen".