249102079 has 2 divisors, whose sum is σ = 249102080. Its totient is φ = 249102078.

The previous prime is 249102041. The next prime is 249102127. The reversal of 249102079 is 970201942.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249102079 - 2²³ = 240713471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249102379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124551039 + 124551040.

It is an arithmetic number, because the mean of its divisors is an integer number (124551040).

Almost surely, 2^249102079 is an apocalyptic number.

249102079 is a deficient number, since it is larger than the sum of its proper divisors (1).

249102079 is an equidigital number, since it uses as much as digits as its factorization.

249102079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 249102079 is about 15782.9680035157. The cubic root of 249102079 is about 629.2054138050.

The spelling of 249102079 in words is "two hundred forty-nine million, one hundred two thousand, seventy-nine".