44070221 has 4 divisors (see below), whose sum is σ = 47460252. Its totient is φ = 40680192.

The previous prime is 44070211. The next prime is 44070233. The reversal of 44070221 is 12207044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17547721 + 26522500 = 4189^2 + 5150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44070221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44070193 and 44070202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44070211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1694996 + ... + 1695021.

It is an arithmetic number, because the mean of its divisors is an integer number (11865063).

Almost surely, 2^44070221 is an apocalyptic number.

It is an amenable number.

44070221 is a deficient number, since it is larger than the sum of its proper divisors (3390031).

44070221 is a wasteful number, since it uses less digits than its factorization.

44070221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390030.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 44070221 is about 6638.5405775667. The cubic root of 44070221 is about 353.2225402202. Note that the first 3 decimals are identical.

Adding to 44070221 its reverse (12207044), we get a palindrome (56277265).

The spelling of 44070221 in words is "forty-four million, seventy thousand, two hundred twenty-one".