397952486 has 8 divisors (see below), whose sum is σ = 622882224. Its totient is φ = 190325080.

The previous prime is 397952459. The next prime is 397952521. The reversal of 397952486 is 684259793.

It is a happy number.

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

It is a super-2 number, since 2×397952486² = 316732362227160392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4325525 + ... + 4325616.

It is an arithmetic number, because the mean of its divisors is an integer number (77860278).

Almost surely, 2^397952486 is an apocalyptic number.

397952486 is a deficient number, since it is larger than the sum of its proper divisors (224929738).

397952486 is a wasteful number, since it uses less digits than its factorization.

397952486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8651166.

The product of its digits is 3265920, while the sum is 53.

The square root of 397952486 is about 19948.7464769093. The cubic root of 397952486 is about 735.5469641766.

It can be divided in two parts, 3979 and 52486, that added together give a palindrome (56465).

The spelling of 397952486 in words is "three hundred ninety-seven million, nine hundred fifty-two thousand, four hundred eighty-six".