397618588 has 6 divisors (see below), whose sum is σ = 695832536. Its totient is φ = 198809292.

The previous prime is 397618583. The next prime is 397618621. The reversal of 397618588 is 885816793.

It is a super-2 number, since 2×397618588² = 316201083046227488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397618583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49702320 + ... + 49702327.

Almost surely, 2^397618588 is an apocalyptic number.

It is an amenable number.

397618588 is a deficient number, since it is larger than the sum of its proper divisors (298213948).

397618588 is a wasteful number, since it uses less digits than its factorization.

397618588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99404651 (or 99404649 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 55.

The square root of 397618588 is about 19940.3758239407. The cubic root of 397618588 is about 735.3411888729.

The spelling of 397618588 in words is "three hundred ninety-seven million, six hundred eighteen thousand, five hundred eighty-eight".