104339987 has 4 divisors (see below), whose sum is σ = 106308720. Its totient is φ = 102371256.

The previous prime is 104339929. The next prime is 104339993. The reversal of 104339987 is 789933401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789933401 = 6263 ⋅126127.

It is a cyclic number.

It is not a de Polignac number, because 104339987 - 2²⁶ = 37231123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104336987) 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 3 ways as a sum of consecutive naturals, for example, 984287 + ... + 984392.

It is an arithmetic number, because the mean of its divisors is an integer number (26577180).

Almost surely, 2^104339987 is an apocalyptic number.

104339987 is a deficient number, since it is larger than the sum of its proper divisors (1968733).

104339987 is an equidigital number, since it uses as much as digits as its factorization.

104339987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968732.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 104339987 is about 10214.6946601453. The cubic root of 104339987 is about 470.7788309237.

The spelling of 104339987 in words is "one hundred four million, three hundred thirty-nine thousand, nine hundred eighty-seven".