44106721 has 8 divisors (see below), whose sum is σ = 47467944. Its totient is φ = 40830720.

The previous prime is 44106683. The next prime is 44106731. The reversal of 44106721 is 12760144.

It can be written as a sum of positive squares in 4 ways, for example, as 876096 + 43230625 = 936^2 + 6575^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44106721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44106731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20230 + ... + 22303.

It is an arithmetic number, because the mean of its divisors is an integer number (5933493).

Almost surely, 2^44106721 is an apocalyptic number.

It is an amenable number.

44106721 is a deficient number, since it is larger than the sum of its proper divisors (3361223).

44106721 is a wasteful number, since it uses less digits than its factorization.

44106721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42611.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 44106721 is about 6641.2891067924. The cubic root of 44106721 is about 353.3200290667.

Adding to 44106721 its reverse (12760144), we get a palindrome (56866865).

The spelling of 44106721 in words is "forty-four million, one hundred six thousand, seven hundred twenty-one".