397955486 has 8 divisors (see below), whose sum is σ = 609634080. Its totient is φ = 194744128.

The previous prime is 397955483. The next prime is 397955491. The reversal of 397955486 is 684559793.

It is a happy number.

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 (397955483) 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, 2116691 + ... + 2116878.

It is an arithmetic number, because the mean of its divisors is an integer number (76204260).

Almost surely, 2^397955486 is an apocalyptic number.

397955486 is a deficient number, since it is larger than the sum of its proper divisors (211678594).

397955486 is a wasteful number, since it uses less digits than its factorization.

397955486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233618.

The product of its digits is 8164800, while the sum is 56.

The square root of 397955486 is about 19948.8216694621. The cubic root of 397955486 is about 735.5488125006.

The spelling of 397955486 in words is "three hundred ninety-seven million, nine hundred fifty-five thousand, four hundred eighty-six".