44122013 has 6 divisors (see below), whose sum is σ = 47777274. Its totient is φ = 40727856.

The previous prime is 44121949. The next prime is 44122037. The reversal of 44122013 is 31022144.

It can be written as a sum of positive squares in 3 ways, for example, as 2815684 + 41306329 = 1678^2 + 6427^2 .

It is not a de Polignac number, because 44122013 - 2⁶ = 44121949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44121982 and 44122000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44122513) 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, 130370 + ... + 130707.

It is an arithmetic number, because the mean of its divisors is an integer number (7962879).

Almost surely, 2^44122013 is an apocalyptic number.

It is an amenable number.

44122013 is a deficient number, since it is larger than the sum of its proper divisors (3655261).

44122013 is a wasteful number, since it uses less digits than its factorization.

44122013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261103 (or 261090 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 44122013 is about 6642.4402895322. The cubic root of 44122013 is about 353.3608569003.

Adding to 44122013 its reverse (31022144), we get a palindrome (75144157).

The spelling of 44122013 in words is "forty-four million, one hundred twenty-two thousand, thirteen".