249249103 has 4 divisors (see below), whose sum is σ = 249316200. Its totient is φ = 249182008.

The previous prime is 249249097. The next prime is 249249139. The reversal of 249249103 is 301942942.

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 249249103 - 2²⁵ = 215694671 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 (249249173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27628 + ... + 35521.

It is an arithmetic number, because the mean of its divisors is an integer number (62329050).

Almost surely, 2^249249103 is an apocalyptic number.

249249103 is a deficient number, since it is larger than the sum of its proper divisors (67097).

249249103 is an equidigital number, since it uses as much as digits as its factorization.

249249103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67096.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 249249103 is about 15787.6249955464. The cubic root of 249249103 is about 629.3291784656.

The spelling of 249249103 in words is "two hundred forty-nine million, two hundred forty-nine thousand, one hundred three".