397814933 has 4 divisors (see below), whose sum is σ = 402607968. Its totient is φ = 393021900.

The previous prime is 397814929. The next prime is 397814939. The reversal of 397814933 is 339418793.

It is a happy number.

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 397814933 - 2² = 397814929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397814939) 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, 2396393 + ... + 2396558.

It is an arithmetic number, because the mean of its divisors is an integer number (100651992).

Almost surely, 2^397814933 is an apocalyptic number.

It is an amenable number.

397814933 is a deficient number, since it is larger than the sum of its proper divisors (4793035).

397814933 is an equidigital number, since it uses as much as digits as its factorization.

397814933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4793034.

The product of its digits is 489888, while the sum is 47.

The square root of 397814933 is about 19945.2985186986. The cubic root of 397814933 is about 735.4622066954.

The spelling of 397814933 in words is "three hundred ninety-seven million, eight hundred fourteen thousand, nine hundred thirty-three".