249091263 has 6 divisors (see below), whose sum is σ = 359798504. Its totient is φ = 166060836.

The previous prime is 249091253. The next prime is 249091267. The reversal of 249091263 is 362190942.

It is not a de Polignac number, because 249091263 - 2¹⁷ = 248960191 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 (249091267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13838395 + ... + 13838412.

Almost surely, 2^249091263 is an apocalyptic number.

249091263 is a deficient number, since it is larger than the sum of its proper divisors (110707241).

249091263 is a wasteful number, since it uses less digits than its factorization.

249091263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27676813 (or 27676810 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 249091263 is about 15782.6253519495. The cubic root of 249091263 is about 629.1963069838.

The spelling of 249091263 in words is "two hundred forty-nine million, ninety-one thousand, two hundred sixty-three".