397385233 has 4 divisors (see below), whose sum is σ = 454154560. Its totient is φ = 340615908.

The previous prime is 397385189. The next prime is 397385273. The reversal of 397385233 is 332583793.

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.

It is a cyclic number.

It is not a de Polignac number, because 397385233 - 2¹³ = 397377041 is a prime.

It is a super-3 number, since 3×397385233³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397385233.

It is not an unprimeable number, because it can be changed into a prime (397385273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28384653 + ... + 28384666.

It is an arithmetic number, because the mean of its divisors is an integer number (113538640).

Almost surely, 2^397385233 is an apocalyptic number.

It is an amenable number.

397385233 is a deficient number, since it is larger than the sum of its proper divisors (56769327).

397385233 is an equidigital number, since it uses as much as digits as its factorization.

397385233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56769326.

The product of its digits is 408240, while the sum is 43.

The square root of 397385233 is about 19934.5236461773. The cubic root of 397385233 is about 735.1973080048.

The spelling of 397385233 in words is "three hundred ninety-seven million, three hundred eighty-five thousand, two hundred thirty-three".