249504799 has 4 divisors (see below), whose sum is σ = 249541264. Its totient is φ = 249468336.

The previous prime is 249504797. The next prime is 249504817. The reversal of 249504799 is 997405942.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 249504799 - 2¹ = 249504797 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 (249504797) 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 3 ways as a sum of consecutive naturals, for example, 4542 + ... + 22795.

It is an arithmetic number, because the mean of its divisors is an integer number (62385316).

Almost surely, 2^249504799 is an apocalyptic number.

249504799 is a deficient number, since it is larger than the sum of its proper divisors (36465).

249504799 is an equidigital number, since it uses as much as digits as its factorization.

249504799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36464.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 249504799 is about 15795.7209078915. The cubic root of 249504799 is about 629.5443072352.

The spelling of 249504799 in words is "two hundred forty-nine million, five hundred four thousand, seven hundred ninety-nine".