249964459 has 2 divisors, whose sum is σ = 249964460. Its totient is φ = 249964458.

The previous prime is 249964433. The next prime is 249964469. The reversal of 249964459 is 954469942.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249964459 - 2⁹ = 249963947 is a prime.

It is not a weakly prime, because it can be changed into another prime (249964409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124982229 + 124982230.

It is an arithmetic number, because the mean of its divisors is an integer number (124982230).

Almost surely, 2^249964459 is an apocalyptic number.

249964459 is a deficient number, since it is larger than the sum of its proper divisors (1).

249964459 is an equidigital number, since it uses as much as digits as its factorization.

249964459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 52.

The square root of 249964459 is about 15810.2643557911. The cubic root of 249964459 is about 629.9306709633.

The spelling of 249964459 in words is "two hundred forty-nine million, nine hundred sixty-four thousand, four hundred fifty-nine".