396249816 has 32 divisors (see below), whose sum is σ = 1013664960. Its totient is φ = 129011232.

The previous prime is 396249803. The next prime is 396249827. The reversal of 396249816 is 618942693.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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, 190950 + ... + 193013.

It is an arithmetic number, because the mean of its divisors is an integer number (31677030).

Almost surely, 2^396249816 is an apocalyptic number.

It is an amenable number.

396249816 is an abundant number, since it is smaller than the sum of its proper divisors (617415144).

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

396249816 is a wasteful number, since it uses less digits than its factorization.

396249816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384015 (or 384011 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 396249816 is about 19906.0246156785. The cubic root of 396249816 is about 734.4964332670.

The spelling of 396249816 in words is "three hundred ninety-six million, two hundred forty-nine thousand, eight hundred sixteen".