80821459 has 8 divisors (see below), whose sum is σ = 85524480. Its totient is φ = 76163400.

The previous prime is 80821457. The next prime is 80821469. The reversal of 80821459 is 95412808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80821459 - 2¹ = 80821457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80821453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7507 + ... + 14764.

It is an arithmetic number, because the mean of its divisors is an integer number (10690560).

Almost surely, 2^80821459 is an apocalyptic number.

80821459 is a deficient number, since it is larger than the sum of its proper divisors (4703021).

80821459 is a wasteful number, since it uses less digits than its factorization.

80821459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22481.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 80821459 is about 8990.0755836645. The cubic root of 80821459 is about 432.3567351567.

The spelling of 80821459 in words is "eighty million, eight hundred twenty-one thousand, four hundred fifty-nine".