397423077 has 8 divisors (see below), whose sum is σ = 531784320. Its totient is φ = 264005280.

The previous prime is 397423073. The next prime is 397423079. The reversal of 397423077 is 770324793.

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

It is not a de Polignac number, because 397423077 - 2² = 397423073 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397423073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234877 + ... + 236562.

It is an arithmetic number, because the mean of its divisors is an integer number (66473040).

Almost surely, 2^397423077 is an apocalyptic number.

It is an amenable number.

397423077 is a deficient number, since it is larger than the sum of its proper divisors (134361243).

397423077 is a wasteful number, since it uses less digits than its factorization.

397423077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471723.

The product of its (nonzero) digits is 222264, while the sum is 42.

The square root of 397423077 is about 19935.4728311119. The cubic root of 397423077 is about 735.2206454965.

The spelling of 397423077 in words is "three hundred ninety-seven million, four hundred twenty-three thousand, seventy-seven".