8099621 has 2 divisors, whose sum is σ = 8099622. Its totient is φ = 8099620.

The previous prime is 8099617. The next prime is 8099627. The reversal of 8099621 is 1269908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7756225 + 343396 = 2785^2 + 586^2 .

It is a cyclic number.

It is not a de Polignac number, because 8099621 - 2² = 8099617 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 (8099627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4049810 + 4049811.

It is an arithmetic number, because the mean of its divisors is an integer number (4049811).

Almost surely, 2^8099621 is an apocalyptic number.

It is an amenable number.

8099621 is a deficient number, since it is larger than the sum of its proper divisors (1).

8099621 is an equidigital number, since it uses as much as digits as its factorization.

8099621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 8099621 is about 2845.9833098597. The cubic root of 8099621 is about 200.8267526908.

The spelling of 8099621 in words is "eight million, ninety-nine thousand, six hundred twenty-one".