80827399 has 2 divisors, whose sum is σ = 80827400. Its totient is φ = 80827398.

The previous prime is 80827391. The next prime is 80827421. The reversal of 80827399 is 99372808.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80827399 - 2³ = 80827391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80827391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40413699 + 40413700.

It is an arithmetic number, because the mean of its divisors is an integer number (40413700).

Almost surely, 2^80827399 is an apocalyptic number.

80827399 is a deficient number, since it is larger than the sum of its proper divisors (1).

80827399 is an equidigital number, since it uses as much as digits as its factorization.

80827399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 80827399 is about 8990.4059418916. The cubic root of 80827399 is about 432.3673269646.

The spelling of 80827399 in words is "eighty million, eight hundred twenty-seven thousand, three hundred ninety-nine".