9252249391 has 12 divisors (see below), whose sum is σ = 11622661456. Its totient is φ = 7209544320.

The previous prime is 9252249361. The next prime is 9252249427. The reversal of 9252249391 is 1939422529.

It is not a de Polignac number, because 9252249391 - 2²⁵ = 9218694959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9252249311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5460930 + ... + 5462623.

Almost surely, 2^9252249391 is an apocalyptic number.

9252249391 is a deficient number, since it is larger than the sum of its proper divisors (2370412065).

9252249391 is a wasteful number, since it uses less digits than its factorization.

9252249391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10923582 (or 10923571 counting only the distinct ones).

The product of its digits is 349920, while the sum is 46.

The square root of 9252249391 is about 96188.6136244826. The cubic root of 9252249391 is about 2099.3383698743.

The spelling of 9252249391 in words is "nine billion, two hundred fifty-two million, two hundred forty-nine thousand, three hundred ninety-one".