104840989 has 16 divisors (see below), whose sum is σ = 121905216. Its totient is φ = 89107200.

The previous prime is 104840971. The next prime is 104840999. The reversal of 104840989 is 989048401.

It is not a de Polignac number, because 104840989 - 2⁷ = 104840861 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 (104840999) 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 15 ways as a sum of consecutive naturals, for example, 27574 + ... + 31144.

It is an arithmetic number, because the mean of its divisors is an integer number (7619076).

Almost surely, 2^104840989 is an apocalyptic number.

It is an amenable number.

104840989 is a deficient number, since it is larger than the sum of its proper divisors (17064227).

104840989 is a wasteful number, since it uses less digits than its factorization.

104840989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 104840989 is about 10239.1888838911. The cubic root of 104840989 is about 471.5311300198.

The spelling of 104840989 in words is "one hundred four million, eight hundred forty thousand, nine hundred eighty-nine".