291479 has 12 divisors (see below), whose sum is σ = 331800. Its totient is φ = 255024.

The previous prime is 291457. The next prime is 291481. The reversal of 291479 is 974192.

It is not a de Polignac number, because 291479 - 2¹² = 287383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 291479.

It is not an unprimeable number, because it can be changed into a prime (291419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10037 + ... + 10065.

It is an arithmetic number, because the mean of its divisors is an integer number (27650).

2²⁹¹⁴⁷⁹ is an apocalyptic number.

291479 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

291479 is a deficient number, since it is larger than the sum of its proper divisors (40321).

291479 is a wasteful number, since it uses less digits than its factorization.

291479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 71 counting only the distinct ones).

The product of its digits is 4536, while the sum is 32.

The square root of 291479 is about 539.8879513381. The cubic root of 291479 is about 66.3033935294.

The spelling of 291479 in words is "two hundred ninety-one thousand, four hundred seventy-nine".