44139744 has 72 divisors (see below), whose sum is σ = 136943352. Its totient is φ = 13374720.

The previous prime is 44139713. The next prime is 44139751. The reversal of 44139744 is 44793144.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 44139699 and 44139708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3799 + ... + 10134.

It is an arithmetic number, because the mean of its divisors is an integer number (1901991).

Almost surely, 2^44139744 is an apocalyptic number.

44139744 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

44139744 is an abundant number, since it is smaller than the sum of its proper divisors (92803608).

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

44139744 is a wasteful number, since it uses less digits than its factorization.

44139744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13960 (or 13949 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 44139744 is about 6643.7748306215. The cubic root of 44139744 is about 353.4081847671.

The spelling of 44139744 in words is "forty-four million, one hundred thirty-nine thousand, seven hundred forty-four".