4396695221 has 2 divisors, whose sum is σ = 4396695222. Its totient is φ = 4396695220.

The previous prime is 4396695167. The next prime is 4396695253. The reversal of 4396695221 is 1225966934.

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., 2456292721 + 1940402500 = 49561^2 + 44050^2 .

It is a cyclic number.

It is not a de Polignac number, because 4396695221 - 2¹⁸ = 4396433077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4396695271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2198347610 + 2198347611.

It is an arithmetic number, because the mean of its divisors is an integer number (2198347611).

Almost surely, 2^4396695221 is an apocalyptic number.

It is an amenable number.

4396695221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4396695221 is an equidigital number, since it uses as much as digits as its factorization.

4396695221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 47.

The square root of 4396695221 is about 66307.5804188330. The cubic root of 4396695221 is about 1638.2321845480.

The spelling of 4396695221 in words is "four billion, three hundred ninety-six million, six hundred ninety-five thousand, two hundred twenty-one".