102408919 has 2 divisors, whose sum is σ = 102408920. Its totient is φ = 102408918.

The previous prime is 102408899. The next prime is 102408923. The reversal of 102408919 is 919804201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102408919 is a prime.

It is a super-2 number, since 2×102408919² = 20975173381497122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102408979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51204459 + 51204460.

It is an arithmetic number, because the mean of its divisors is an integer number (51204460).

Almost surely, 2^102408919 is an apocalyptic number.

102408919 is a deficient number, since it is larger than the sum of its proper divisors (1).

102408919 is an equidigital number, since it uses as much as digits as its factorization.

102408919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 102408919 is about 10119.7291959815. The cubic root of 102408919 is about 467.8564206959.

The spelling of 102408919 in words is "one hundred two million, four hundred eight thousand, nine hundred nineteen".