397629395 has 4 divisors (see below), whose sum is σ = 477155280. Its totient is φ = 318103512.

The previous prime is 397629383. The next prime is 397629403. The reversal of 397629395 is 593926793.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 397629395 - 2⁸ = 397629139 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 39762935 + ... + 39762944.

It is an arithmetic number, because the mean of its divisors is an integer number (119288820).

Almost surely, 2^397629395 is an apocalyptic number.

397629395 is a deficient number, since it is larger than the sum of its proper divisors (79525885).

397629395 is an equidigital number, since it uses as much as digits as its factorization.

397629395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79525884.

The product of its digits is 2755620, while the sum is 53.

The square root of 397629395 is about 19940.6468049560. The cubic root of 397629395 is about 735.3478508353.

The spelling of 397629395 in words is "three hundred ninety-seven million, six hundred twenty-nine thousand, three hundred ninety-five".