249582479 has 2 divisors, whose sum is σ = 249582480. Its totient is φ = 249582478.

The previous prime is 249582469. The next prime is 249582517. The reversal of 249582479 is 974285942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249582479 - 2²⁰ = 248533903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249582469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124791239 + 124791240.

It is an arithmetic number, because the mean of its divisors is an integer number (124791240).

Almost surely, 2^249582479 is an apocalyptic number.

249582479 is a deficient number, since it is larger than the sum of its proper divisors (1).

249582479 is an equidigital number, since it uses as much as digits as its factorization.

249582479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 50.

The square root of 249582479 is about 15798.1796103222. The cubic root of 249582479 is about 629.6096338712.

The spelling of 249582479 in words is "two hundred forty-nine million, five hundred eighty-two thousand, four hundred seventy-nine".