248761879 has 2 divisors, whose sum is σ = 248761880. Its totient is φ = 248761878.

The previous prime is 248761831. The next prime is 248761897. The reversal of 248761879 is 978167842.

Together with next prime (248761897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 248761879 - 2²³ = 240373271 is a prime.

It is a super-2 number, since 2×248761879² = 123764944887221282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248761829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124380939 + 124380940.

It is an arithmetic number, because the mean of its divisors is an integer number (124380940).

Almost surely, 2^248761879 is an apocalyptic number.

248761879 is a deficient number, since it is larger than the sum of its proper divisors (1).

248761879 is an equidigital number, since it uses as much as digits as its factorization.

248761879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 52.

The square root of 248761879 is about 15772.1868807087. The cubic root of 248761879 is about 628.9188469455.

The spelling of 248761879 in words is "two hundred forty-eight million, seven hundred sixty-one thousand, eight hundred seventy-nine".