249790 has 8 divisors (see below), whose sum is σ = 449640. Its totient is φ = 99912.

The previous prime is 249779. The next prime is 249797. The reversal of 249790 is 97942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249797) 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, 12480 + ... + 12499.

It is an arithmetic number, because the mean of its divisors is an integer number (56205).

2²⁴⁹⁷⁹⁰ is an apocalyptic number.

249790 is a deficient number, since it is larger than the sum of its proper divisors (199850).

249790 is a wasteful number, since it uses less digits than its factorization.

249790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24986.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 249790 is about 499.7899558815. The cubic root of 249790 is about 62.9784086588.

The spelling of 249790 in words is "two hundred forty-nine thousand, seven hundred ninety".