249509627 has 2 divisors, whose sum is σ = 249509628. Its totient is φ = 249509626.

The previous prime is 249509609. The next prime is 249509671. The reversal of 249509627 is 726905942.

It is an a-pointer prime, because the next prime (249509671) can be obtained adding 249509627 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249509627 - 2¹⁸ = 249247483 is a prime.

It is not a weakly prime, because it can be changed into another prime (249509677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124754813 + 124754814.

It is an arithmetic number, because the mean of its divisors is an integer number (124754814).

Almost surely, 2^249509627 is an apocalyptic number.

249509627 is a deficient number, since it is larger than the sum of its proper divisors (1).

249509627 is an equidigital number, since it uses as much as digits as its factorization.

249509627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 249509627 is about 15795.8737333520. The cubic root of 249509627 is about 629.5483678389.

The spelling of 249509627 in words is "two hundred forty-nine million, five hundred nine thousand, six hundred twenty-seven".