249958 has 4 divisors (see below), whose sum is σ = 374940. Its totient is φ = 124978.

The previous prime is 249947. The next prime is 249967. The reversal of 249958 is 859942.

249958 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 859942 = 2 ⋅429971.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62488 + ... + 62491.

It is an arithmetic number, because the mean of its divisors is an integer number (93735).

2²⁴⁹⁹⁵⁸ is an apocalyptic number.

249958 is a deficient number, since it is larger than the sum of its proper divisors (124982).

249958 is a wasteful number, since it uses less digits than its factorization.

249958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124981.

The product of its digits is 25920, while the sum is 37.

The square root of 249958 is about 499.9579982359. The cubic root of 249958 is about 62.9925245182.

The spelling of 249958 in words is "two hundred forty-nine thousand, nine hundred fifty-eight".