80832989 has 2 divisors, whose sum is σ = 80832990. Its totient is φ = 80832988.

The previous prime is 80832979. The next prime is 80833019. The reversal of 80832989 is 98923808.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52562500 + 28270489 = 7250^2 + 5317^2 .

It is a cyclic number.

It is not a de Polignac number, because 80832989 - 2¹² = 80828893 is a prime.

It is a super-2 number, since 2×80832989² = 13067944221348242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80832929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40416494 + 40416495.

It is an arithmetic number, because the mean of its divisors is an integer number (40416495).

Almost surely, 2^80832989 is an apocalyptic number.

It is an amenable number.

80832989 is a deficient number, since it is larger than the sum of its proper divisors (1).

80832989 is an equidigital number, since it uses as much as digits as its factorization.

80832989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 80832989 is about 8990.7168234796. The cubic root of 80832989 is about 432.3772942021.

The spelling of 80832989 in words is "eighty million, eight hundred thirty-two thousand, nine hundred eighty-nine".