249885903 has 4 divisors (see below), whose sum is σ = 333181208. Its totient is φ = 166590600.

The previous prime is 249885893. The next prime is 249885949. The reversal of 249885903 is 309588942.

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

It is not a de Polignac number, because 249885903 - 2¹⁶ = 249820367 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 (249885803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41647648 + ... + 41647653.

It is an arithmetic number, because the mean of its divisors is an integer number (83295302).

Almost surely, 2^249885903 is an apocalyptic number.

249885903 is a deficient number, since it is larger than the sum of its proper divisors (83295305).

249885903 is an equidigital number, since it uses as much as digits as its factorization.

249885903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83295304.

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 249885903 is about 15807.7798251367. The cubic root of 249885903 is about 629.8646748897.

The spelling of 249885903 in words is "two hundred forty-nine million, eight hundred eighty-five thousand, nine hundred three".