396861724 has 24 divisors (see below), whose sum is σ = 801587808. Its totient is φ = 168398400.

The previous prime is 396861691. The next prime is 396861733. The reversal of 396861724 is 427168693.

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, 67339 + ... + 72994.

It is an arithmetic number, because the mean of its divisors is an integer number (33399492).

Almost surely, 2^396861724 is an apocalyptic number.

It is an amenable number.

396861724 is an abundant number, since it is smaller than the sum of its proper divisors (404726084).

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

396861724 is a wasteful number, since it uses less digits than its factorization.

396861724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140445 (or 140443 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

The square root of 396861724 is about 19921.3886062192. The cubic root of 396861724 is about 734.8743203747.

The spelling of 396861724 in words is "three hundred ninety-six million, eight hundred sixty-one thousand, seven hundred twenty-four".