396926940 has 24 divisors (see below), whose sum is σ = 1111395600. Its totient is φ = 105847168.

The previous prime is 396926923. The next prime is 396926963. The reversal of 396926940 is 49629693.

It is a self number, because there is not a number n which added to its sum of digits gives 396926940.

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, 3307665 + ... + 3307784.

It is an arithmetic number, because the mean of its divisors is an integer number (46308150).

Almost surely, 2^396926940 is an apocalyptic number.

396926940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

396926940 is an abundant number, since it is smaller than the sum of its proper divisors (714468660).

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

396926940 is a wasteful number, since it uses less digits than its factorization.

396926940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6615461 (or 6615459 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 48.

The square root of 396926940 is about 19923.0253726687. The cubic root of 396926940 is about 734.9145719584.

The spelling of 396926940 in words is "three hundred ninety-six million, nine hundred twenty-six thousand, nine hundred forty".