397536406 has 8 divisors (see below), whose sum is σ = 596391264. Its totient is φ = 198739320.

The previous prime is 397536397. The next prime is 397536409. The reversal of 397536406 is 604635793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397536409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13836 + ... + 31408.

It is an arithmetic number, because the mean of its divisors is an integer number (74548908).

Almost surely, 2^397536406 is an apocalyptic number.

397536406 is a deficient number, since it is larger than the sum of its proper divisors (198854858).

397536406 is a wasteful number, since it uses less digits than its factorization.

397536406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28886.

The product of its (nonzero) digits is 408240, while the sum is 43.

The square root of 397536406 is about 19938.3150240937. The cubic root of 397536406 is about 735.2905239263.

The spelling of 397536406 in words is "three hundred ninety-seven million, five hundred thirty-six thousand, four hundred six".