44042013 has 12 divisors (see below), whose sum is σ = 63684348. Its totient is φ = 29329920.

The previous prime is 44042003. The next prime is 44042017. The reversal of 44042013 is 31024044.

It can be written as a sum of positive squares in 2 ways, for example, as 7717284 + 36324729 = 2778^2 + 6027^2 .

It is not a de Polignac number, because 44042013 - 2⁴ = 44041997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44042017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8943 + ... + 12963.

It is an arithmetic number, because the mean of its divisors is an integer number (5307029).

Almost surely, 2^44042013 is an apocalyptic number.

It is an amenable number.

44042013 is a deficient number, since it is larger than the sum of its proper divisors (19642335).

44042013 is a wasteful number, since it uses less digits than its factorization.

44042013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5244 (or 5241 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 44042013 is about 6636.4156741422. The cubic root of 44042013 is about 353.1471618221.

Adding to 44042013 its reverse (31024044), we get a palindrome (75066057).

The spelling of 44042013 in words is "forty-four million, forty-two thousand, thirteen".