100075999 has 4 divisors (see below), whose sum is σ = 100747800. Its totient is φ = 99404200.

The previous prime is 100075993. The next prime is 100076003. The reversal of 100075999 is 999570001.

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 100075999 - 2¹⁷ = 99944927 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100075993) 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, 335677 + ... + 335974.

It is an arithmetic number, because the mean of its divisors is an integer number (25186950).

Almost surely, 2^100075999 is an apocalyptic number.

100075999 is a deficient number, since it is larger than the sum of its proper divisors (671801).

100075999 is an equidigital number, since it uses as much as digits as its factorization.

100075999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671800.

The product of its (nonzero) digits is 25515, while the sum is 40.

The square root of 100075999 is about 10003.7992282932. The cubic root of 100075999 is about 464.2764389559.

The spelling of 100075999 in words is "one hundred million, seventy-five thousand, nine hundred ninety-nine".