249618959 has 2 divisors, whose sum is σ = 249618960. Its totient is φ = 249618958.

The previous prime is 249618953. The next prime is 249618997. The reversal of 249618959 is 959816942.

249618959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249618959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249618959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249618953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124809479 + 124809480.

It is an arithmetic number, because the mean of its divisors is an integer number (124809480).

Almost surely, 2^249618959 is an apocalyptic number.

249618959 is a deficient number, since it is larger than the sum of its proper divisors (1).

249618959 is an equidigital number, since it uses as much as digits as its factorization.

249618959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 53.

The square root of 249618959 is about 15799.3341315386. The cubic root of 249618959 is about 629.6403078200.

The spelling of 249618959 in words is "two hundred forty-nine million, six hundred eighteen thousand, nine hundred fifty-nine".