249793 has 4 divisors (see below), whose sum is σ = 262960. Its totient is φ = 236628.

The previous prime is 249779. The next prime is 249797. The reversal of 249793 is 397942.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 397942 = 2 ⋅198971.

It is a cyclic number.

It is not a de Polignac number, because 249793 - 2¹³ = 241601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6555 + ... + 6592.

It is an arithmetic number, because the mean of its divisors is an integer number (65740).

2²⁴⁹⁷⁹³ is an apocalyptic number.

It is an amenable number.

249793 is a deficient number, since it is larger than the sum of its proper divisors (13167).

249793 is a wasteful number, since it uses less digits than its factorization.

249793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13166.

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

The square root of 249793 is about 499.7929571333. The cubic root of 249793 is about 62.9786607833.

It can be divided in two parts, 2497 and 93, that multiplied together give a triangular number (232221 = T₆₈₁).

The spelling of 249793 in words is "two hundred forty-nine thousand, seven hundred ninety-three".