100899839 has 2 divisors, whose sum is σ = 100899840. Its totient is φ = 100899838.

The previous prime is 100899833. The next prime is 100899871. The reversal of 100899839 is 938998001.

It is a weak prime.

It is an emirp because it is prime and its reverse (938998001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100899839 - 2⁸ = 100899583 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 100899793 and 100899802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100899833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50449919 + 50449920.

It is an arithmetic number, because the mean of its divisors is an integer number (50449920).

Almost surely, 2^100899839 is an apocalyptic number.

100899839 is a deficient number, since it is larger than the sum of its proper divisors (1).

100899839 is an equidigital number, since it uses as much as digits as its factorization.

100899839 is an odious number, because the sum of its binary digits is odd.

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

The square root of 100899839 is about 10044.8911890573. The cubic root of 100899839 is about 465.5469557288.

The spelling of 100899839 in words is "one hundred million, eight hundred ninety-nine thousand, eight hundred thirty-nine".