397847590 has 16 divisors (see below), whose sum is σ = 818429472. Its totient is φ = 136404864.

The previous prime is 397847573. The next prime is 397847599. The reversal of 397847590 is 95748793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397847599) 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, 2841699 + ... + 2841838.

It is an arithmetic number, because the mean of its divisors is an integer number (51151842).

Almost surely, 2^397847590 is an apocalyptic number.

397847590 is an abundant number, since it is smaller than the sum of its proper divisors (420581882).

397847590 is a wasteful number, since it uses less digits than its factorization.

397847590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5683551.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The square root of 397847590 is about 19946.1171660050. The cubic root of 397847590 is about 735.4823310716.

It can be divided in two parts, 39784 and 7590, that added together give a palindrome (47374).

The spelling of 397847590 in words is "three hundred ninety-seven million, eight hundred forty-seven thousand, five hundred ninety".