249822487 has 2 divisors, whose sum is σ = 249822488. Its totient is φ = 249822486.

The previous prime is 249822479. The next prime is 249822491. The reversal of 249822487 is 784228942.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249822487 - 2³ = 249822479 is a prime.

It is a super-2 number, since 2×249822487² = 124822550021730338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249822407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124911243 + 124911244.

It is an arithmetic number, because the mean of its divisors is an integer number (124911244).

Almost surely, 2^249822487 is an apocalyptic number.

249822487 is a deficient number, since it is larger than the sum of its proper divisors (1).

249822487 is an equidigital number, since it uses as much as digits as its factorization.

249822487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 516096, while the sum is 46.

The square root of 249822487 is about 15805.7738500840. The cubic root of 249822487 is about 629.8113880667.

The spelling of 249822487 in words is "two hundred forty-nine million, eight hundred twenty-two thousand, four hundred eighty-seven".