397943458 has 16 divisors (see below), whose sum is σ = 667064160. Its totient is φ = 176471200.

The previous prime is 397943453. The next prime is 397943479. The reversal of 397943458 is 854349793.

It is not an unprimeable number, because it can be changed into a prime (397943453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219688 + ... + 221491.

It is an arithmetic number, because the mean of its divisors is an integer number (41691510).

Almost surely, 2^397943458 is an apocalyptic number.

397943458 is a deficient number, since it is larger than the sum of its proper divisors (269120702).

397943458 is a wasteful number, since it uses less digits than its factorization.

397943458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441233.

The product of its digits is 3265920, while the sum is 52.

The square root of 397943458 is about 19948.5201957438. The cubic root of 397943458 is about 735.5414018977.

It can be divided in two parts, 39 and 7943458, that added together give a palindrome (7943497).

The spelling of 397943458 in words is "three hundred ninety-seven million, nine hundred forty-three thousand, four hundred fifty-eight".