100389899 has 4 divisors (see below), whose sum is σ = 100655160. Its totient is φ = 100124640.

The previous prime is 100389893. The next prime is 100389923. The reversal of 100389899 is 998983001.

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 100389899 - 2²⁰ = 99341323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100389893) 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, 132062 + ... + 132819.

It is an arithmetic number, because the mean of its divisors is an integer number (25163790).

Almost surely, 2^100389899 is an apocalyptic number.

100389899 is a deficient number, since it is larger than the sum of its proper divisors (265261).

100389899 is an equidigital number, since it uses as much as digits as its factorization.

100389899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265260.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 100389899 is about 10019.4759843018. The cubic root of 100389899 is about 464.7613513144.

The spelling of 100389899 in words is "one hundred million, three hundred eighty-nine thousand, eight hundred ninety-nine".