396753813 has 12 divisors (see below), whose sum is σ = 583902540. Its totient is φ = 259511616.

The previous prime is 396753809. The next prime is 396753823. The reversal of 396753813 is 318357693.

It can be written as a sum of positive squares in 2 ways, for example, as 365650884 + 31102929 = 19122^2 + 5577^2 .

It is not a de Polignac number, because 396753813 - 2² = 396753809 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396753823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 415408 + ... + 416361.

It is an arithmetic number, because the mean of its divisors is an integer number (48658545).

Almost surely, 2^396753813 is an apocalyptic number.

It is an amenable number.

396753813 is a deficient number, since it is larger than the sum of its proper divisors (187148727).

396753813 is a wasteful number, since it uses less digits than its factorization.

396753813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831828 (or 831825 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 396753813 is about 19918.6800014459. The cubic root of 396753813 is about 734.8077075751.

The spelling of 396753813 in words is "three hundred ninety-six million, seven hundred fifty-three thousand, eight hundred thirteen".