80828389 has 2 divisors, whose sum is σ = 80828390. Its totient is φ = 80828388.

The previous prime is 80828383. The next prime is 80828393. The reversal of 80828389 is 98382808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78322500 + 2505889 = 8850^2 + 1583^2 .

It is a cyclic number.

It is not a de Polignac number, because 80828389 - 2¹¹ = 80826341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80828383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40414194 + 40414195.

It is an arithmetic number, because the mean of its divisors is an integer number (40414195).

Almost surely, 2^80828389 is an apocalyptic number.

It is an amenable number.

80828389 is a deficient number, since it is larger than the sum of its proper divisors (1).

80828389 is an equidigital number, since it uses as much as digits as its factorization.

80828389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 80828389 is about 8990.4610004159. The cubic root of 80828389 is about 432.3690922155.

It can be divided in two parts, 8082 and 8389, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 80828389 in words is "eighty million, eight hundred twenty-eight thousand, three hundred eighty-nine".