104239440 has 80 divisors (see below), whose sum is σ = 359054400. Its totient is φ = 27796608.

The previous prime is 104239433. The next prime is 104239459. The reversal of 104239440 is 44932401.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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, 21970 + ... + 26289.

It is an arithmetic number, because the mean of its divisors is an integer number (4488180).

Almost surely, 2^104239440 is an apocalyptic number.

104239440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104239440 is an abundant number, since it is smaller than the sum of its proper divisors (254814960).

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

104239440 is a wasteful number, since it uses less digits than its factorization.

104239440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48281 (or 48269 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 104239440 is about 10209.7717898100. The cubic root of 104239440 is about 470.6275606597.

The spelling of 104239440 in words is "one hundred four million, two hundred thirty-nine thousand, four hundred forty".