397303793 has 4 divisors (see below), whose sum is σ = 397346928. Its totient is φ = 397260660.

The previous prime is 397303763. The next prime is 397303811.

397303793 is nontrivially palindromic in base 10.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 397303793 - 2⁸ = 397303537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (397303763) 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, 1571 + ... + 28232.

It is an arithmetic number, because the mean of its divisors is an integer number (99336732).

Almost surely, 2^397303793 is an apocalyptic number.

It is an amenable number.

397303793 is a deficient number, since it is larger than the sum of its proper divisors (43135).

397303793 is a wasteful number, since it uses less digits than its factorization.

397303793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43134.

The product of its (nonzero) digits is 321489, while the sum is 44.

The square root of 397303793 is about 19932.4808541235. The cubic root of 397303793 is about 735.1470808747.

The spelling of 397303793 in words is "three hundred ninety-seven million, three hundred three thousand, seven hundred ninety-three".