41904221 has 2 divisors, whose sum is σ = 41904222. Its totient is φ = 41904220.

The previous prime is 41904197. The next prime is 41904223. The reversal of 41904221 is 12240914.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36168196 + 5736025 = 6014^2 + 2395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41904221 is a prime.

Together with 41904223, 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 (41904223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20952110 + 20952111.

It is an arithmetic number, because the mean of its divisors is an integer number (20952111).

Almost surely, 2^41904221 is an apocalyptic number.

It is an amenable number.

41904221 is a deficient number, since it is larger than the sum of its proper divisors (1).

41904221 is an equidigital number, since it uses as much as digits as its factorization.

41904221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 41904221 is about 6473.3469704628. The cubic root of 41904221 is about 347.3382329375.

The spelling of 41904221 in words is "forty-one million, nine hundred four thousand, two hundred twenty-one".