44121013 has 4 divisors (see below), whose sum is σ = 44134720. Its totient is φ = 44107308.

The previous prime is 44120971. The next prime is 44121017. The reversal of 44121013 is 31012144.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 44121013 - 2⁹ = 44120501 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 (44121017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 898 + ... + 9436.

It is an arithmetic number, because the mean of its divisors is an integer number (11033680).

Almost surely, 2^44121013 is an apocalyptic number.

It is an amenable number.

44121013 is a deficient number, since it is larger than the sum of its proper divisors (13707).

44121013 is an equidigital number, since it uses as much as digits as its factorization.

44121013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13706.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 44121013 is about 6642.3650155649. The cubic root of 44121013 is about 353.3581873067.

Adding to 44121013 its reverse (31012144), we get a palindrome (75133157).

The spelling of 44121013 in words is "forty-four million, one hundred twenty-one thousand, thirteen".