396930940 has 24 divisors (see below), whose sum is σ = 952634592. Its totient is φ = 136090560.

The previous prime is 396930923. The next prime is 396930949. The reversal of 396930940 is 49039693.

It is a happy number.

It is a super-2 number, since 2×396930940² = 315108342258567200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396930949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1417471 + ... + 1417750.

It is an arithmetic number, because the mean of its divisors is an integer number (39693108).

Almost surely, 2^396930940 is an apocalyptic number.

It is an amenable number.

396930940 is an abundant number, since it is smaller than the sum of its proper divisors (555703652).

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

396930940 is a wasteful number, since it uses less digits than its factorization.

396930940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835237 (or 2835235 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 396930940 is about 19923.1257587759. The cubic root of 396930940 is about 734.9170406313.

The spelling of 396930940 in words is "three hundred ninety-six million, nine hundred thirty thousand, nine hundred forty".