396769637 has 4 divisors (see below), whose sum is σ = 432839616. Its totient is φ = 360699660.

The previous prime is 396769621. The next prime is 396769649. The reversal of 396769637 is 736967693.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 396769637 - 2⁴ = 396769621 is a prime.

It is a super-2 number, since 2×396769637² = 314852289690223538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396769657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18034973 + ... + 18034994.

It is an arithmetic number, because the mean of its divisors is an integer number (108209904).

Almost surely, 2^396769637 is an apocalyptic number.

It is an amenable number.

396769637 is a deficient number, since it is larger than the sum of its proper divisors (36069979).

396769637 is a wasteful number, since it uses less digits than its factorization.

396769637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36069978.

The product of its digits is 7715736, while the sum is 56.

The square root of 396769637 is about 19919.0772125618. The cubic root of 396769637 is about 734.8174763890.

It can be divided in two parts, 39 and 6769637, that added together give a palindrome (6769676).

The spelling of 396769637 in words is "three hundred ninety-six million, seven hundred sixty-nine thousand, six hundred thirty-seven".