249079 has 2 divisors, whose sum is σ = 249080. Its totient is φ = 249078.

The previous prime is 249059. The next prime is 249089. The reversal of 249079 is 970942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249079 - 2¹¹ = 247031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249059) 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 as a sum of consecutive naturals, namely, 124539 + 124540.

It is an arithmetic number, because the mean of its divisors is an integer number (124540).

2²⁴⁹⁰⁷⁹ is an apocalyptic number.

249079 is a deficient number, since it is larger than the sum of its proper divisors (1).

249079 is an equidigital number, since it uses as much as digits as its factorization.

249079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 249079 is about 499.0781501929. The cubic root of 249079 is about 62.9185981503.

The spelling of 249079 in words is "two hundred forty-nine thousand, seventy-nine".