100513999 has 4 divisors (see below), whose sum is σ = 100612336. Its totient is φ = 100415664.

The previous prime is 100513969. The next prime is 100514021. The reversal of 100513999 is 999315001.

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 100513999 - 2⁵ = 100513967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100513939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47619 + ... + 49684.

It is an arithmetic number, because the mean of its divisors is an integer number (25153084).

Almost surely, 2^100513999 is an apocalyptic number.

100513999 is a deficient number, since it is larger than the sum of its proper divisors (98337).

100513999 is an equidigital number, since it uses as much as digits as its factorization.

100513999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98336.

The product of its (nonzero) digits is 10935, while the sum is 37.

The square root of 100513999 is about 10025.6670102293. The cubic root of 100513999 is about 464.9527820402.

The spelling of 100513999 in words is "one hundred million, five hundred thirteen thousand, nine hundred ninety-nine".