397279 has 6 divisors (see below), whose sum is σ = 415856. Its totient is φ = 379500.

The previous prime is 397259. The next prime is 397283. The reversal of 397279 is 972793.

It is not a de Polignac number, because 397279 - 2⁷ = 397151 is a prime.

It is a Duffinian number.

397279 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 154 + ... + 904.

2³⁹⁷²⁷⁹ is an apocalyptic number.

397279 is a deficient number, since it is larger than the sum of its proper divisors (18577).

397279 is an equidigital number, since it uses as much as digits as its factorization.

397279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 774 counting only the distinct ones).

The product of its digits is 23814, while the sum is 37.

The square root of 397279 is about 630.3007218781. The cubic root of 397279 is about 73.5131788730.

It can be divided in two parts, 397 and 279, that added together give a palindrome (676).

The spelling of 397279 in words is "three hundred ninety-seven thousand, two hundred seventy-nine".