100013999 has 2 divisors, whose sum is σ = 100014000. Its totient is φ = 100013998.

The previous prime is 100013989. The next prime is 100014037. The reversal of 100013999 is 999310001.

It is a weak prime.

It is an emirp because it is prime and its reverse (999310001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100013999 - 2¹⁶ = 99948463 is a prime.

It is a Chen prime.

It is equal to p_5762228 and since 100013999 and 5762228 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100013989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50006999 + 50007000.

It is an arithmetic number, because the mean of its divisors is an integer number (50007000).

Almost surely, 2^100013999 is an apocalyptic number.

100013999 is a deficient number, since it is larger than the sum of its proper divisors (1).

100013999 is an equidigital number, since it uses as much as digits as its factorization.

100013999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 100013999 is about 10000.6999255052. The cubic root of 100013999 is about 464.1805415514.

The spelling of 100013999 in words is "one hundred million, thirteen thousand, nine hundred ninety-nine".