397169 has 4 divisors (see below), whose sum is σ = 398580. Its totient is φ = 395760.

The previous prime is 397153. The next prime is 397181. The reversal of 397169 is 961793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 961793 = 7 ⋅137399.

It can be written as a sum of positive squares in 2 ways, for example, as 160000 + 237169 = 400^2 + 487^2 .

It is a cyclic number.

It is not a de Polignac number, because 397169 - 2⁴ = 397153 is a prime.

It is a super-2 number, since 2×397169² = 315486429122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397469) 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, 122 + ... + 899.

It is an arithmetic number, because the mean of its divisors is an integer number (99645).

2³⁹⁷¹⁶⁹ is an apocalyptic number.

It is an amenable number.

397169 is a deficient number, since it is larger than the sum of its proper divisors (1411).

397169 is a wasteful number, since it uses less digits than its factorization.

397169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410.

The product of its digits is 10206, while the sum is 35.

The square root of 397169 is about 630.2134559020. The cubic root of 397169 is about 73.5063933847.

The spelling of 397169 in words is "three hundred ninety-seven thousand, one hundred sixty-nine".