249013087 has 2 divisors, whose sum is σ = 249013088. Its totient is φ = 249013086.

The previous prime is 249013073. The next prime is 249013123. The reversal of 249013087 is 780310942.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249013087 is a prime.

It is a pancake number, because a pancake can be divided into 249013087 parts by 22316 straight cuts.

It is equal to p_13628257 and since 249013087 and 13628257 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249013057) 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, 124506543 + 124506544.

It is an arithmetic number, because the mean of its divisors is an integer number (124506544).

Almost surely, 2^249013087 is an apocalyptic number.

249013087 is a deficient number, since it is larger than the sum of its proper divisors (1).

249013087 is an equidigital number, since it uses as much as digits as its factorization.

249013087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 249013087 is about 15780.1485100743. The cubic root of 249013087 is about 629.1304767648.

The spelling of 249013087 in words is "two hundred forty-nine million, thirteen thousand, eighty-seven".