102089887 has 2 divisors, whose sum is σ = 102089888. Its totient is φ = 102089886.

The previous prime is 102089873. The next prime is 102089899. The reversal of 102089887 is 788980201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102089887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102089807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51044943 + 51044944.

It is an arithmetic number, because the mean of its divisors is an integer number (51044944).

Almost surely, 2^102089887 is an apocalyptic number.

102089887 is a deficient number, since it is larger than the sum of its proper divisors (1).

102089887 is an equidigital number, since it uses as much as digits as its factorization.

102089887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 102089887 is about 10103.9540280031. The cubic root of 102089887 is about 467.3700814316.

The spelling of 102089887 in words is "one hundred two million, eighty-nine thousand, eight hundred eighty-seven".