44644613 has 8 divisors (see below), whose sum is σ = 49252056. Its totient is φ = 40204800.

The previous prime is 44644597. The next prime is 44644627. The reversal of 44644613 is 31644644.

It can be written as a sum of positive squares in 4 ways, for example, as 1387684 + 43256929 = 1178^2 + 6577^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44644613 - 2⁴ = 44644597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44644613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44644693) 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 7 ways as a sum of consecutive naturals, for example, 41348 + ... + 42413.

It is an arithmetic number, because the mean of its divisors is an integer number (6156507).

Almost surely, 2^44644613 is an apocalyptic number.

It is an amenable number.

44644613 is a deficient number, since it is larger than the sum of its proper divisors (4607443).

44644613 is a wasteful number, since it uses less digits than its factorization.

44644613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83815.

The product of its digits is 27648, while the sum is 32.

The square root of 44644613 is about 6681.6624428356. The cubic root of 44644613 is about 354.7505037917.

The spelling of 44644613 in words is "forty-four million, six hundred forty-four thousand, six hundred thirteen".