44202013 has 6 divisors (see below), whose sum is σ = 45438234. Its totient is φ = 42968016.

The previous prime is 44201959. The next prime is 44202047. The reversal of 44202013 is 31020244.

It can be written as a sum of positive squares in 3 ways, for example, as 40678884 + 3523129 = 6378^2 + 1877^2 .

It is not a de Polignac number, because 44202013 - 2²¹ = 42104861 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 (44202073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39895 + ... + 40987.

It is an arithmetic number, because the mean of its divisors is an integer number (7573039).

Almost surely, 2^44202013 is an apocalyptic number.

It is an amenable number.

44202013 is a deficient number, since it is larger than the sum of its proper divisors (1236221).

44202013 is an frugal number, since it uses more digits than its factorization.

44202013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223 (or 1130 counting only the distinct ones).

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

The square root of 44202013 is about 6648.4594456160. The cubic root of 44202013 is about 353.5742938263.

Adding to 44202013 its reverse (31020244), we get a palindrome (75222257).

The spelling of 44202013 in words is "forty-four million, two hundred two thousand, thirteen".