100999879 has 2 divisors, whose sum is σ = 100999880. Its totient is φ = 100999878.

The previous prime is 100999867. The next prime is 100999883. The reversal of 100999879 is 978999001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100999879 - 2²⁵ = 67445447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100999849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50499939 + 50499940.

It is an arithmetic number, because the mean of its divisors is an integer number (50499940).

Almost surely, 2^100999879 is an apocalyptic number.

100999879 is a deficient number, since it is larger than the sum of its proper divisors (1).

100999879 is an equidigital number, since it uses as much as digits as its factorization.

100999879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 52.

The square root of 100999879 is about 10049.8696011441. The cubic root of 100999879 is about 465.7007648073.

The spelling of 100999879 in words is "one hundred million, nine hundred ninety-nine thousand, eight hundred seventy-nine".