248957279 has 2 divisors, whose sum is σ = 248957280. Its totient is φ = 248957278.

The previous prime is 248957273. The next prime is 248957321. The reversal of 248957279 is 972759842.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248957279 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 248957279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248957273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124478639 + 124478640.

It is an arithmetic number, because the mean of its divisors is an integer number (124478640).

Almost surely, 2^248957279 is an apocalyptic number.

248957279 is a deficient number, since it is larger than the sum of its proper divisors (1).

248957279 is an equidigital number, since it uses as much as digits as its factorization.

248957279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 53.

The square root of 248957279 is about 15778.3801133069. The cubic root of 248957279 is about 629.0834736972.

The spelling of 248957279 in words is "two hundred forty-eight million, nine hundred fifty-seven thousand, two hundred seventy-nine".