249838 has 4 divisors (see below), whose sum is σ = 374760. Its totient is φ = 124918.

The previous prime is 249833. The next prime is 249853. The reversal of 249838 is 838942.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249833) by changing a digit.

249838 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62458 + ... + 62461.

It is an arithmetic number, because the mean of its divisors is an integer number (93690).

2²⁴⁹⁸³⁸ is an apocalyptic number.

249838 is a deficient number, since it is larger than the sum of its proper divisors (124922).

249838 is a wasteful number, since it uses less digits than its factorization.

249838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124921.

The product of its digits is 13824, while the sum is 34.

The square root of 249838 is about 499.8379737475. The cubic root of 249838 is about 62.9824424072.

The spelling of 249838 in words is "two hundred forty-nine thousand, eight hundred thirty-eight".