80205469 has 2 divisors, whose sum is σ = 80205470. Its totient is φ = 80205468.

The previous prime is 80205457. The next prime is 80205481. The reversal of 80205469 is 96450208.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (80205457) and next prime (80205481).

It can be written as a sum of positive squares in only one way, i.e., 61387225 + 18818244 = 7835^2 + 4338^2 .

It is a cyclic number.

It is not a de Polignac number, because 80205469 - 2²³ = 71816861 is a prime.

It is a super-2 number, since 2×80205469² = 12865834515019922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80205409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40102734 + 40102735.

It is an arithmetic number, because the mean of its divisors is an integer number (40102735).

Almost surely, 2^80205469 is an apocalyptic number.

It is an amenable number.

80205469 is a deficient number, since it is larger than the sum of its proper divisors (1).

80205469 is an equidigital number, since it uses as much as digits as its factorization.

80205469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 80205469 is about 8955.7506106412. The cubic root of 80205469 is about 431.2555139252.

The spelling of 80205469 in words is "eighty million, two hundred five thousand, four hundred sixty-nine".