102656399 has 2 divisors, whose sum is σ = 102656400. Its totient is φ = 102656398.

The previous prime is 102656363. The next prime is 102656417. The reversal of 102656399 is 993656201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102656399 - 2¹⁶ = 102590863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102656599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51328199 + 51328200.

It is an arithmetic number, because the mean of its divisors is an integer number (51328200).

Almost surely, 2^102656399 is an apocalyptic number.

102656399 is a deficient number, since it is larger than the sum of its proper divisors (1).

102656399 is an equidigital number, since it uses as much as digits as its factorization.

102656399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 102656399 is about 10131.9494175603. The cubic root of 102656399 is about 468.2329893415.

The spelling of 102656399 in words is "one hundred two million, six hundred fifty-six thousand, three hundred ninety-nine".