102299999 has 4 divisors (see below), whose sum is σ = 108317664. Its totient is φ = 96282336.

The previous prime is 102299987. The next prime is 102300001. The reversal of 102299999 is 999992201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102299999 - 2¹⁶ = 102234463 is a prime.

It is a Duffinian number.

102299999 is a modest number, since divided by 99999 gives 1022 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102299959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3008807 + ... + 3008840.

It is an arithmetic number, because the mean of its divisors is an integer number (27079416).

Almost surely, 2^102299999 is an apocalyptic number.

102299999 is a deficient number, since it is larger than the sum of its proper divisors (6017665).

102299999 is an equidigital number, since it uses as much as digits as its factorization.

102299999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6017664.

The product of its (nonzero) digits is 236196, while the sum is 50.

The square root of 102299999 is about 10114.3461973575. The cubic root of 102299999 is about 467.6904943983.

The spelling of 102299999 in words is "one hundred two million, two hundred ninety-nine thousand, nine hundred ninety-nine".