249992315 has 4 divisors (see below), whose sum is σ = 299990784. Its totient is φ = 199993848.

The previous prime is 249992299. The next prime is 249992317. The reversal of 249992315 is 513299942.

It is a happy number.

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 249992315 - 2⁴ = 249992299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249992317) 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, 24999227 + ... + 24999236.

It is an arithmetic number, because the mean of its divisors is an integer number (74997696).

Almost surely, 2^249992315 is an apocalyptic number.

249992315 is a deficient number, since it is larger than the sum of its proper divisors (49998469).

249992315 is an equidigital number, since it uses as much as digits as its factorization.

249992315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49998468.

The product of its digits is 174960, while the sum is 44.

The square root of 249992315 is about 15811.1452779361. The cubic root of 249992315 is about 629.9540698858.

The spelling of 249992315 in words is "two hundred forty-nine million, nine hundred ninety-two thousand, three hundred fifteen".