44292221 has 2 divisors, whose sum is σ = 44292222. Its totient is φ = 44292220.

The previous prime is 44292179. The next prime is 44292223. The reversal of 44292221 is 12229244.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37687321 + 6604900 = 6139^2 + 2570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44292221 is a prime.

It is a super-2 number, since 2×44292221² = 3923601682225682, which contains 22 as substring.

Together with 44292223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44292223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22146110 + 22146111.

It is an arithmetic number, because the mean of its divisors is an integer number (22146111).

Almost surely, 2^44292221 is an apocalyptic number.

It is an amenable number.

44292221 is a deficient number, since it is larger than the sum of its proper divisors (1).

44292221 is an equidigital number, since it uses as much as digits as its factorization.

44292221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

The square root of 44292221 is about 6655.2401158786. The cubic root of 44292221 is about 353.8146566130.

The spelling of 44292221 in words is "forty-four million, two hundred ninety-two thousand, two hundred twenty-one".