397848793 has 4 divisors (see below), whose sum is σ = 405355428. Its totient is φ = 390342160.

The previous prime is 397848769. The next prime is 397848811.

397848793 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 193015449 + 204833344 = 13893^2 + 14312^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397848793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397848743) 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, 3753238 + ... + 3753343.

It is an arithmetic number, because the mean of its divisors is an integer number (101338857).

Almost surely, 2^397848793 is an apocalyptic number.

It is an amenable number.

397848793 is a deficient number, since it is larger than the sum of its proper divisors (7506635).

397848793 is an equidigital number, since it uses as much as digits as its factorization.

397848793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7506634.

The product of its digits is 9144576, while the sum is 58.

The square root of 397848793 is about 19946.1473222274. The cubic root of 397848793 is about 735.4830723809.

The spelling of 397848793 in words is "three hundred ninety-seven million, eight hundred forty-eight thousand, seven hundred ninety-three".