249506713 has 2 divisors, whose sum is σ = 249506714. Its totient is φ = 249506712.

The previous prime is 249506711. The next prime is 249506717. The reversal of 249506713 is 317605942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148644864 + 100861849 = 12192^2 + 10043^2 .

It is a cyclic number.

It is not a de Polignac number, because 249506713 - 2¹ = 249506711 is a prime.

Together with 249506711, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (249506711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124753356 + 124753357.

It is an arithmetic number, because the mean of its divisors is an integer number (124753357).

Almost surely, 2^249506713 is an apocalyptic number.

It is an amenable number.

249506713 is a deficient number, since it is larger than the sum of its proper divisors (1).

249506713 is an equidigital number, since it uses as much as digits as its factorization.

249506713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 249506713 is about 15795.7814938040. The cubic root of 249506713 is about 629.5459170169.

The spelling of 249506713 in words is "two hundred forty-nine million, five hundred six thousand, seven hundred thirteen".