80420699 has 2 divisors, whose sum is σ = 80420700. Its totient is φ = 80420698.

The previous prime is 80420689. The next prime is 80420701. The reversal of 80420699 is 99602408.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80420699 - 2²⁰ = 79372123 is a prime.

It is a Sophie Germain prime.

Together with 80420701, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80420629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40210349 + 40210350.

It is an arithmetic number, because the mean of its divisors is an integer number (40210350).

Almost surely, 2^80420699 is an apocalyptic number.

80420699 is a deficient number, since it is larger than the sum of its proper divisors (1).

80420699 is an equidigital number, since it uses as much as digits as its factorization.

80420699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 80420699 is about 8967.7588616109. The cubic root of 80420699 is about 431.6409249734.

The spelling of 80420699 in words is "eighty million, four hundred twenty thousand, six hundred ninety-nine".