44004013 has 2 divisors, whose sum is σ = 44004014. Its totient is φ = 44004012.

The previous prime is 44003977. The next prime is 44004017. The reversal of 44004013 is 31040044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35784324 + 8219689 = 5982^2 + 2867^2 .

It is a cyclic number.

It is not a de Polignac number, because 44004013 - 2⁹ = 44003501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44004017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22002006 + 22002007.

It is an arithmetic number, because the mean of its divisors is an integer number (22002007).

Almost surely, 2^44004013 is an apocalyptic number.

It is an amenable number.

44004013 is a deficient number, since it is larger than the sum of its proper divisors (1).

44004013 is an equidigital number, since it uses as much as digits as its factorization.

44004013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 44004013 is about 6633.5520650704. The cubic root of 44004013 is about 353.0455660002.

Adding to 44004013 its reverse (31040044), we get a palindrome (75044057).

The spelling of 44004013 in words is "forty-four million, four thousand, thirteen".