44213013 has 16 divisors (see below), whose sum is σ = 70539840. Its totient is φ = 27207792.

The previous prime is 44213009. The next prime is 44213027. The reversal of 44213013 is 31031244.

It is not a de Polignac number, because 44213013 - 2² = 44213009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44213033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62631 + ... + 63332.

It is an arithmetic number, because the mean of its divisors is an integer number (4408740).

Almost surely, 2^44213013 is an apocalyptic number.

It is an amenable number.

44213013 is a deficient number, since it is larger than the sum of its proper divisors (26326827).

44213013 is a wasteful number, since it uses less digits than its factorization.

44213013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125985 (or 125979 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 44213013 is about 6649.2866534689. The cubic root of 44213013 is about 353.6036212587.

Adding to 44213013 its reverse (31031244), we get a palindrome (75244257).

The spelling of 44213013 in words is "forty-four million, two hundred thirteen thousand, thirteen".