249903 has 6 divisors (see below), whose sum is σ = 360984. Its totient is φ = 166596.

The previous prime is 249881. The next prime is 249911. The reversal of 249903 is 309942.

249903 is nontrivially palindromic in base 2 and base 8.

It is not a de Polignac number, because 249903 - 2⁵ = 249871 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 4 + 9³ + 9⁵ + 0 + 3¹⁰ .

249903 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 249903.

It is not an unprimeable number, because it can be changed into a prime (249923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13875 + ... + 13892.

It is an arithmetic number, because the mean of its divisors is an integer number (60164).

2²⁴⁹⁹⁰³ is an apocalyptic number.

249903 is a deficient number, since it is larger than the sum of its proper divisors (111081).

249903 is a wasteful number, since it uses less digits than its factorization.

249903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27773 (or 27770 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 249903 is about 499.9029905892. The cubic root of 249903 is about 62.9879039513.

The spelling of 249903 in words is "two hundred forty-nine thousand, nine hundred three".