397387886 has 16 divisors (see below), whose sum is σ = 721309536. Its totient is φ = 160290816.

The previous prime is 397387873. The next prime is 397387889. The reversal of 397387886 is 688783793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397387889) 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, 834611 + ... + 835086.

It is an arithmetic number, because the mean of its divisors is an integer number (45081846).

Almost surely, 2^397387886 is an apocalyptic number.

397387886 is a deficient number, since it is larger than the sum of its proper divisors (323921650).

397387886 is a wasteful number, since it uses less digits than its factorization.

397387886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669723.

The product of its digits is 12192768, while the sum is 59.

The square root of 397387886 is about 19934.5901889153. The cubic root of 397387886 is about 735.1989440949.

The spelling of 397387886 in words is "three hundred ninety-seven million, three hundred eighty-seven thousand, eight hundred eighty-six".