397455069 has 16 divisors (see below), whose sum is σ = 579110400. Its totient is φ = 240467760.

The previous prime is 397455067. The next prime is 397455119. The reversal of 397455069 is 960554793.

It is not a de Polignac number, because 397455069 - 2¹ = 397455067 is a prime.

It is a super-2 number, since 2×397455069² = 315941063747589522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397455067) 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, 9714 + ... + 29820.

It is an arithmetic number, because the mean of its divisors is an integer number (36194400).

Almost surely, 2^397455069 is an apocalyptic number.

It is an amenable number.

397455069 is a deficient number, since it is larger than the sum of its proper divisors (181655331).

397455069 is a wasteful number, since it uses less digits than its factorization.

397455069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20720.

The product of its (nonzero) digits is 1020600, while the sum is 48.

The square root of 397455069 is about 19936.2752037586. The cubic root of 397455069 is about 735.2403730439.

The spelling of 397455069 in words is "three hundred ninety-seven million, four hundred fifty-five thousand, sixty-nine".