397486887 has 16 divisors (see below), whose sum is σ = 609326592. Its totient is φ = 225773280.

The previous prime is 397486871. The next prime is 397486907. The reversal of 397486887 is 788684793.

It is not a de Polignac number, because 397486887 - 2⁴ = 397486871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397486887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397486807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53164 + ... + 60177.

It is an arithmetic number, because the mean of its divisors is an integer number (38082912).

Almost surely, 2^397486887 is an apocalyptic number.

397486887 is a deficient number, since it is larger than the sum of its proper divisors (211839705).

397486887 is a wasteful number, since it uses less digits than its factorization.

397486887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113518.

The product of its digits is 16257024, while the sum is 60.

The square root of 397486887 is about 19937.0731803843. The cubic root of 397486887 is about 735.2599922460.

The spelling of 397486887 in words is "three hundred ninety-seven million, four hundred eighty-six thousand, eight hundred eighty-seven".