249504117 has 8 divisors (see below), whose sum is σ = 333184224. Its totient is φ = 166080048.

The previous prime is 249504071. The next prime is 249504131. The reversal of 249504117 is 711405942.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 249504117 - 2²⁰ = 248455541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249504187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61723 + ... + 65640.

It is an arithmetic number, because the mean of its divisors is an integer number (41648028).

Almost surely, 2^249504117 is an apocalyptic number.

It is an amenable number.

249504117 is a deficient number, since it is larger than the sum of its proper divisors (83680107).

249504117 is a wasteful number, since it uses less digits than its factorization.

249504117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128019.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 249504117 is about 15795.6993197516. The cubic root of 249504117 is about 629.5437336329.

The spelling of 249504117 in words is "two hundred forty-nine million, five hundred four thousand, one hundred seventeen".