249202317 has 16 divisors (see below), whose sum is σ = 408947840. Its totient is φ = 131447232.

The previous prime is 249202313. The next prime is 249202339. The reversal of 249202317 is 713202942.

It is not a de Polignac number, because 249202317 - 2² = 249202313 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249202313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456142 + ... + 456687.

It is an arithmetic number, because the mean of its divisors is an integer number (25559240).

Almost surely, 2^249202317 is an apocalyptic number.

It is an amenable number.

249202317 is a deficient number, since it is larger than the sum of its proper divisors (159745523).

249202317 is a wasteful number, since it uses less digits than its factorization.

249202317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912852.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 249202317 is about 15786.1431958538. The cubic root of 249202317 is about 629.2897993370.

It can be divided in two parts, 249 and 202317, that added together give a triangular number (202566 = T₆₃₆).

The spelling of 249202317 in words is "two hundred forty-nine million, two hundred two thousand, three hundred seventeen".