104839940 has 24 divisors (see below), whose sum is σ = 220519320. Its totient is φ = 41868288.

The previous prime is 104839927. The next prime is 104839963. The reversal of 104839940 is 49938401.

It can be written as a sum of positive squares in 4 ways, for example, as 7974976 + 96864964 = 2824^2 + 9842^2 .

It is a junction number, because it is equal to n+sod(n) for n = 104839894 and 104839903.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9566 + ... + 17354.

It is an arithmetic number, because the mean of its divisors is an integer number (9188305).

Almost surely, 2^104839940 is an apocalyptic number.

104839940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104839940 is an abundant number, since it is smaller than the sum of its proper divisors (115679380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

104839940 is a wasteful number, since it uses less digits than its factorization.

104839940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8471 (or 8469 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 104839940 is about 10239.1376590023. The cubic root of 104839940 is about 471.5295573594.

The spelling of 104839940 in words is "one hundred four million, eight hundred thirty-nine thousand, nine hundred forty".