249762013 has 2 divisors, whose sum is σ = 249762014. Its totient is φ = 249762012.

The previous prime is 249761989. The next prime is 249762031. The reversal of 249762013 is 310267942.

Together with next prime (249762031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127283524 + 122478489 = 11282^2 + 11067^2 .

It is a cyclic number.

It is not a de Polignac number, because 249762013 - 2¹³ = 249753821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249762013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249763013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124881006 + 124881007.

It is an arithmetic number, because the mean of its divisors is an integer number (124881007).

Almost surely, 2^249762013 is an apocalyptic number.

It is an amenable number.

249762013 is a deficient number, since it is larger than the sum of its proper divisors (1).

249762013 is an equidigital number, since it uses as much as digits as its factorization.

249762013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 249762013 is about 15803.8606992089. The cubic root of 249762013 is about 629.7605649296.

The spelling of 249762013 in words is "two hundred forty-nine million, seven hundred sixty-two thousand, thirteen".