44321013 has 28 divisors (see below), whose sum is σ = 72505248. Its totient is φ = 26856360.

The previous prime is 44321009. The next prime is 44321029. The reversal of 44321013 is 31012344.

44321013 is a `hidden beast` number, since 443 + 210 + 13 = 666.

It is not a de Polignac number, because 44321013 - 2² = 44321009 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 (44321033) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 5256 + ... + 10782.

Almost surely, 2^44321013 is an apocalyptic number.

It is an amenable number.

44321013 is a deficient number, since it is larger than the sum of its proper divisors (28184235).

44321013 is an equidigital number, since it uses as much as digits as its factorization.

44321013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556 (or 5541 counting only the distinct ones).

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

The square root of 44321013 is about 6657.4028719914. The cubic root of 44321013 is about 353.8913053248.

Adding to 44321013 its reverse (31012344), we get a palindrome (75333357).

It can be divided in two parts, 4432 and 1013, that added together give a palindrome (5445).

The spelling of 44321013 in words is "forty-four million, three hundred twenty-one thousand, thirteen".