249379 has 4 divisors (see below), whose sum is σ = 268576. Its totient is φ = 230184.

The previous prime is 249377. The next prime is 249383. The reversal of 249379 is 973942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 973942 = 2 ⋅486971.

It is a cyclic number.

It is not a de Polignac number, because 249379 - 2¹ = 249377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249377) 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, 9579 + ... + 9604.

It is an arithmetic number, because the mean of its divisors is an integer number (67144).

2²⁴⁹³⁷⁹ is an apocalyptic number.

249379 is a deficient number, since it is larger than the sum of its proper divisors (19197).

249379 is a wasteful number, since it uses less digits than its factorization.

249379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19196.

The product of its digits is 13608, while the sum is 34.

The square root of 249379 is about 499.3786138793. The cubic root of 249379 is about 62.9438485145.

The spelling of 249379 in words is "two hundred forty-nine thousand, three hundred seventy-nine".