44139330 has 40 divisors (see below), whose sum is σ = 118687932. Its totient is φ = 11770272.

The previous prime is 44139307. The next prime is 44139331. The reversal of 44139330 is 3393144.

It can be written as a sum of positive squares in 2 ways, for example, as 42341049 + 1798281 = 6507^2 + 1341^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 44139294 and 44139303.

It is not an unprimeable number, because it can be changed into a prime (44139331) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26437 + ... + 28056.

Almost surely, 2^44139330 is an apocalyptic number.

44139330 is an abundant number, since it is smaller than the sum of its proper divisors (74548602).

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

44139330 is a wasteful number, since it uses less digits than its factorization.

44139330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54512 (or 54503 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 44139330 is about 6643.7436735624. The cubic root of 44139330 is about 353.4070798562.

The spelling of 44139330 in words is "forty-four million, one hundred thirty-nine thousand, three hundred thirty".