44139245 has 8 divisors (see below), whose sum is σ = 53078784. Its totient is φ = 35236944.

The previous prime is 44139241. The next prime is 44139253. The reversal of 44139245 is 54293144.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44139245 - 2² = 44139241 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44139241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6629 + ... + 11498.

It is an arithmetic number, because the mean of its divisors is an integer number (6634848).

Almost surely, 2^44139245 is an apocalyptic number.

It is an amenable number.

44139245 is a deficient number, since it is larger than the sum of its proper divisors (8939539).

44139245 is a wasteful number, since it uses less digits than its factorization.

44139245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18619.

The product of its digits is 17280, while the sum is 32.

The square root of 44139245 is about 6643.7372765635. The cubic root of 44139245 is about 353.4068530017.

The spelling of 44139245 in words is "forty-four million, one hundred thirty-nine thousand, two hundred forty-five".