8199901 has 2 divisors, whose sum is σ = 8199902. Its totient is φ = 8199900.

The previous prime is 8199883. The next prime is 8199907. The reversal of 8199901 is 1099918.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5067001 + 3132900 = 2251^2 + 1770^2 .

It is a cyclic number.

It is not a de Polignac number, because 8199901 - 2⁵ = 8199869 is a prime.

8199901 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8199907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4099950 + 4099951.

It is an arithmetic number, because the mean of its divisors is an integer number (4099951).

Almost surely, 2^8199901 is an apocalyptic number.

It is an amenable number.

8199901 is a deficient number, since it is larger than the sum of its proper divisors (1).

8199901 is an equidigital number, since it uses as much as digits as its factorization.

8199901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 8199901 is about 2863.5469264533. The cubic root of 8199901 is about 201.6521559883.

The spelling of 8199901 in words is "eight million, one hundred ninety-nine thousand, nine hundred one".