100689239 has 16 divisors (see below), whose sum is σ = 120645120. Its totient is φ = 82162080.

The previous prime is 100689191. The next prime is 100689263. The reversal of 100689239 is 932986001.

It is not a de Polignac number, because 100689239 - 2⁸ = 100688983 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100689139) 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 in 15 ways as a sum of consecutive naturals, for example, 35504 + ... + 38234.

It is an arithmetic number, because the mean of its divisors is an integer number (7540320).

Almost surely, 2^100689239 is an apocalyptic number.

100689239 is a deficient number, since it is larger than the sum of its proper divisors (19955881).

100689239 is a wasteful number, since it uses less digits than its factorization.

100689239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 100689239 is about 10034.4027724623. The cubic root of 100689239 is about 465.2228307276. Note that the first 3 decimals are identical.

The spelling of 100689239 in words is "one hundred million, six hundred eighty-nine thousand, two hundred thirty-nine".