396955740 has 48 divisors (see below), whose sum is σ = 1112676768. Its totient is φ = 105740544.

The previous prime is 396955739. The next prime is 396955751. The reversal of 396955740 is 47559693.

It is a self number, because there is not a number n which added to its sum of digits gives 396955740.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62554 + ... + 68606.

It is an arithmetic number, because the mean of its divisors is an integer number (23180766).

Almost surely, 2^396955740 is an apocalyptic number.

396955740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

396955740 is an abundant number, since it is smaller than the sum of its proper divisors (715721028).

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

396955740 is a wasteful number, since it uses less digits than its factorization.

396955740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7158 (or 7156 counting only the distinct ones).

The product of its (nonzero) digits is 1020600, while the sum is 48.

The square root of 396955740 is about 19923.7481413513. The cubic root of 396955740 is about 734.9323460335.

The spelling of 396955740 in words is "three hundred ninety-six million, nine hundred fifty-five thousand, seven hundred forty".