249773 has 4 divisors (see below), whose sum is σ = 252348. Its totient is φ = 247200.

The previous prime is 249763. The next prime is 249779. The reversal of 249773 is 377942.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 218089 + 31684 = 467^2 + 178^2 .

It is a cyclic number.

It is not a de Polignac number, because 249773 - 2⁸ = 249517 is a prime.

It is a Duffinian number.

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 249773.

It is not an unprimeable number, because it can be changed into a prime (249779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1136 + ... + 1337.

It is an arithmetic number, because the mean of its divisors is an integer number (63087).

249773 is a Friedman number, since it can be written as (9*7)^3-274, using all its digits and the basic arithmetic operations.

2²⁴⁹⁷⁷³ is an apocalyptic number.

It is an amenable number.

249773 is a deficient number, since it is larger than the sum of its proper divisors (2575).

249773 is a wasteful number, since it uses less digits than its factorization.

249773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574.

The product of its digits is 10584, while the sum is 32.

The square root of 249773 is about 499.7729484476. The cubic root of 249773 is about 62.9769799157.

It can be divided in two parts, 2497 and 73, that multiplied together give a palindrome (182281).

The spelling of 249773 in words is "two hundred forty-nine thousand, seven hundred seventy-three".