297139 has 4 divisors (see below), whose sum is σ = 300024. Its totient is φ = 294256.

The previous prime is 297133. The next prime is 297151. The reversal of 297139 is 931792.

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

It is a cyclic number.

It is not a de Polignac number, because 297139 - 2⁹ = 296627 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 297139.

It is not an unprimeable number, because it can be changed into a prime (297133) 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, 1282 + ... + 1495.

It is an arithmetic number, because the mean of its divisors is an integer number (75006).

2²⁹⁷¹³⁹ is an apocalyptic number.

297139 is a deficient number, since it is larger than the sum of its proper divisors (2885).

297139 is a wasteful number, since it uses less digits than its factorization.

297139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2884.

The product of its digits is 3402, while the sum is 31.

The square root of 297139 is about 545.1045771226. The cubic root of 297139 is about 66.7298096201.

The spelling of 297139 in words is "two hundred ninety-seven thousand, one hundred thirty-nine".