249994717 has 12 divisors (see below), whose sum is σ = 292040640. Its totient is φ = 213374616.

The previous prime is 249994687. The next prime is 249994729. The reversal of 249994717 is 717499942.

It is not a de Polignac number, because 249994717 - 2¹⁵ = 249961949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249994747) 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 in 11 ways as a sum of consecutive naturals, for example, 1038 + ... + 22384.

It is an arithmetic number, because the mean of its divisors is an integer number (24336720).

Almost surely, 2^249994717 is an apocalyptic number.

It is an amenable number.

249994717 is a deficient number, since it is larger than the sum of its proper divisors (42045923).

249994717 is a wasteful number, since it uses less digits than its factorization.

249994717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21600 (or 21593 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 52.

The square root of 249994717 is about 15811.2212368305. The cubic root of 249994717 is about 629.9560874742.

The spelling of 249994717 in words is "two hundred forty-nine million, nine hundred ninety-four thousand, seven hundred seventeen".