805980899 has 2 divisors, whose sum is σ = 805980900. Its totient is φ = 805980898.

The previous prime is 805980883. The next prime is 805980907. The reversal of 805980899 is 998089508.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 805980899 - 2⁴ = 805980883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (805980859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402990449 + 402990450.

It is an arithmetic number, because the mean of its divisors is an integer number (402990450).

Almost surely, 2^805980899 is an apocalyptic number.

805980899 is a deficient number, since it is larger than the sum of its proper divisors (1).

805980899 is an equidigital number, since it uses as much as digits as its factorization.

805980899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 56.

The square root of 805980899 is about 28389.8027291491. The cubic root of 805980899 is about 930.6254316128.

The spelling of 805980899 in words is "eight hundred five million, nine hundred eighty thousand, eight hundred ninety-nine".