102798999 has 12 divisors (see below), whose sum is σ = 148824000. Its totient is φ = 68377344.

The previous prime is 102798977. The next prime is 102799003. The reversal of 102798999 is 999897201.

It is not a de Polignac number, because 102798999 - 2⁵ = 102798967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102798929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8679 + ... + 16760.

It is an arithmetic number, because the mean of its divisors is an integer number (12402000).

Almost surely, 2^102798999 is an apocalyptic number.

102798999 is a deficient number, since it is larger than the sum of its proper divisors (46025001).

102798999 is a wasteful number, since it uses less digits than its factorization.

102798999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25894 (or 25891 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 54.

The square root of 102798999 is about 10138.9841207095. The cubic root of 102798999 is about 468.4496965057.

The spelling of 102798999 in words is "one hundred two million, seven hundred ninety-eight thousand, nine hundred ninety-nine".