249115923 has 12 divisors (see below), whose sum is σ = 411239088. Its totient is φ = 142351920.

The previous prime is 249115901. The next prime is 249115957. The reversal of 249115923 is 329511942.

It is not a de Polignac number, because 249115923 - 2⁵ = 249115891 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (249115963) 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, 1977048 + ... + 1977173.

It is an arithmetic number, because the mean of its divisors is an integer number (34269924).

Almost surely, 2^249115923 is an apocalyptic number.

249115923 is a deficient number, since it is larger than the sum of its proper divisors (162123165).

249115923 is a wasteful number, since it uses less digits than its factorization.

249115923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3954234 (or 3954231 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 249115923 is about 15783.4065714598. The cubic root of 249115923 is about 629.2170697473.

The spelling of 249115923 in words is "two hundred forty-nine million, one hundred fifteen thousand, nine hundred twenty-three".