80428091 has 2 divisors, whose sum is σ = 80428092. Its totient is φ = 80428090.

The previous prime is 80428087. The next prime is 80428093. The reversal of 80428091 is 19082408.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80428091 - 2² = 80428087 is a prime.

Together with 80428093, 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 (80428093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40214045 + 40214046.

It is an arithmetic number, because the mean of its divisors is an integer number (40214046).

Almost surely, 2^80428091 is an apocalyptic number.

80428091 is a deficient number, since it is larger than the sum of its proper divisors (1).

80428091 is an equidigital number, since it uses as much as digits as its factorization.

80428091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 80428091 is about 8968.1709952476. The cubic root of 80428091 is about 431.6541495619.

The spelling of 80428091 in words is "eighty million, four hundred twenty-eight thousand, ninety-one".