249798 has 32 divisors (see below), whose sum is σ = 552960. Its totient is φ = 74880.

The previous prime is 249797. The next prime is 249811. The reversal of 249798 is 897942.

249798 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 249798.

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 15 ways as a sum of consecutive naturals, for example, 3123 + ... + 3201.

It is an arithmetic number, because the mean of its divisors is an integer number (17280).

2²⁴⁹⁷⁹⁸ is an apocalyptic number.

249798 is an abundant number, since it is smaller than the sum of its proper divisors (303162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249798 is a wasteful number, since it uses less digits than its factorization.

249798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132.

The product of its digits is 36288, while the sum is 39.

The square root of 249798 is about 499.7979591795. The cubic root of 249798 is about 62.9790809861.

The spelling of 249798 in words is "two hundred forty-nine thousand, seven hundred ninety-eight".