249562987 has 2 divisors, whose sum is σ = 249562988. Its totient is φ = 249562986.

The previous prime is 249562933. The next prime is 249563011. The reversal of 249562987 is 789265942.

249562987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249562987 - 2¹⁵ = 249530219 is a prime.

It is not a weakly prime, because it can be changed into another prime (249562087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124781493 + 124781494.

It is an arithmetic number, because the mean of its divisors is an integer number (124781494).

Almost surely, 2^249562987 is an apocalyptic number.

249562987 is a deficient number, since it is larger than the sum of its proper divisors (1).

249562987 is an equidigital number, since it uses as much as digits as its factorization.

249562987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 52.

The square root of 249562987 is about 15797.5626917572. The cubic root of 249562987 is about 629.5932429364.

The spelling of 249562987 in words is "two hundred forty-nine million, five hundred sixty-two thousand, nine hundred eighty-seven".