44121613 has 8 divisors (see below), whose sum is σ = 48748608. Its totient is φ = 39720384.

The previous prime is 44121611. The next prime is 44121631. The reversal of 44121613 is 31612144.

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 44121613 - 2¹ = 44121611 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 (44121611) 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, 56031 + ... + 56812.

It is an arithmetic number, because the mean of its divisors is an integer number (6093576).

Almost surely, 2^44121613 is an apocalyptic number.

It is an amenable number.

44121613 is a deficient number, since it is larger than the sum of its proper divisors (4626995).

44121613 is a wasteful number, since it uses less digits than its factorization.

44121613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112883.

The product of its digits is 576, while the sum is 22.

The square root of 44121613 is about 6642.4101800476. The cubic root of 44121613 is about 353.3597890677.

Adding to 44121613 its reverse (31612144), we get a palindrome (75733757).

The spelling of 44121613 in words is "forty-four million, one hundred twenty-one thousand, six hundred thirteen".