102238879 has 2 divisors, whose sum is σ = 102238880. Its totient is φ = 102238878.

The previous prime is 102238849. The next prime is 102238889. The reversal of 102238879 is 978832201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102238879 - 2⁵ = 102238847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102238849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51119439 + 51119440.

It is an arithmetic number, because the mean of its divisors is an integer number (51119440).

Almost surely, 2^102238879 is an apocalyptic number.

102238879 is a deficient number, since it is larger than the sum of its proper divisors (1).

102238879 is an equidigital number, since it uses as much as digits as its factorization.

102238879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 102238879 is about 10111.3242950664. The cubic root of 102238879 is about 467.5973339616.

The spelling of 102238879 in words is "one hundred two million, two hundred thirty-eight thousand, eight hundred seventy-nine".