44139405 has 8 divisors (see below), whose sum is σ = 70623072. Its totient is φ = 23541008.

The previous prime is 44139383. The next prime is 44139419. The reversal of 44139405 is 50493144.

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 44139405 - 2⁶ = 44139341 is a prime.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 1471299 + ... + 1471328.

It is an arithmetic number, because the mean of its divisors is an integer number (8827884).

Almost surely, 2^44139405 is an apocalyptic number.

It is an amenable number.

44139405 is a deficient number, since it is larger than the sum of its proper divisors (26483667).

44139405 is a wasteful number, since it uses less digits than its factorization.

44139405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942635.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 44139405 is about 6643.7493179680. The cubic root of 44139405 is about 353.4072800217.

It can be divided in two parts, 44139 and 405, that added together give a palindrome (44544).

The spelling of 44139405 in words is "forty-four million, one hundred thirty-nine thousand, four hundred five".