397390085 has 16 divisors (see below), whose sum is σ = 497344512. Its totient is φ = 304473600.

The previous prime is 397390069. The next prime is 397390087. The reversal of 397390085 is 580093793.

It is not a de Polignac number, because 397390085 - 2⁴ = 397390069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397390087) 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, 1820 + ... + 28250.

It is an arithmetic number, because the mean of its divisors is an integer number (31084032).

Almost surely, 2^397390085 is an apocalyptic number.

It is an amenable number.

397390085 is a deficient number, since it is larger than the sum of its proper divisors (99954427).

397390085 is a wasteful number, since it uses less digits than its factorization.

397390085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26564.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 397390085 is about 19934.6453442242. The cubic root of 397390085 is about 735.2003002002.

The spelling of 397390085 in words is "three hundred ninety-seven million, three hundred ninety thousand, eighty-five".