80189069 has 2 divisors, whose sum is σ = 80189070. Its totient is φ = 80189068.

The previous prime is 80189009. The next prime is 80189099. The reversal of 80189069 is 96098108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41126569 + 39062500 = 6413^2 + 6250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80189069 is a prime.

It is a super-2 number, since 2×80189069² = 12860573574173522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80189009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40094534 + 40094535.

It is an arithmetic number, because the mean of its divisors is an integer number (40094535).

Almost surely, 2^80189069 is an apocalyptic number.

It is an amenable number.

80189069 is a deficient number, since it is larger than the sum of its proper divisors (1).

80189069 is an equidigital number, since it uses as much as digits as its factorization.

80189069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 80189069 is about 8954.8349510195. The cubic root of 80189069 is about 431.2261182882.

The spelling of 80189069 in words is "eighty million, one hundred eighty-nine thousand, sixty-nine".