397284297 has 4 divisors (see below), whose sum is σ = 529712400. Its totient is φ = 264856196.

The previous prime is 397284269. The next prime is 397284299. The reversal of 397284297 is 792482793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 792482793 = 3 ⋅264160931.

It is a cyclic number.

It is not a de Polignac number, because 397284297 - 2¹⁹ = 396760009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397284299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66214047 + ... + 66214052.

It is an arithmetic number, because the mean of its divisors is an integer number (132428100).

Almost surely, 2^397284297 is an apocalyptic number.

It is an amenable number.

397284297 is a deficient number, since it is larger than the sum of its proper divisors (132428103).

397284297 is a wasteful number, since it uses less digits than its factorization.

397284297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132428102.

The product of its digits is 1524096, while the sum is 51.

The square root of 397284297 is about 19931.9917971085. The cubic root of 397284297 is about 735.1350559354.

The spelling of 397284297 in words is "three hundred ninety-seven million, two hundred eighty-four thousand, two hundred ninety-seven".