397299235 has 4 divisors (see below), whose sum is σ = 476759088. Its totient is φ = 317839384.

The previous prime is 397299233. The next prime is 397299247. The reversal of 397299235 is 532992793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 532992793 = 3697 ⋅144169.

It is a cyclic number.

It is not a de Polignac number, because 397299235 - 2¹ = 397299233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397299233) 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, 39729919 + ... + 39729928.

It is an arithmetic number, because the mean of its divisors is an integer number (119189772).

Almost surely, 2^397299235 is an apocalyptic number.

397299235 is a deficient number, since it is larger than the sum of its proper divisors (79459853).

397299235 is an equidigital number, since it uses as much as digits as its factorization.

397299235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79459852.

The product of its digits is 918540, while the sum is 49.

The square root of 397299235 is about 19932.3665178021. The cubic root of 397299235 is about 735.1442695807.

The spelling of 397299235 in words is "three hundred ninety-seven million, two hundred ninety-nine thousand, two hundred thirty-five".