80446669 has 4 divisors (see below), whose sum is σ = 85178844. Its totient is φ = 75714496.

The previous prime is 80446661. The next prime is 80446673. The reversal of 80446669 is 96664408.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34070569 + 46376100 = 5837^2 + 6810^2 .

It is a cyclic number.

It is not a de Polignac number, because 80446669 - 2³ = 80446661 is a prime.

It is a super-2 number, since 2×80446669² = 12943333106391122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80446661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2366062 + ... + 2366095.

It is an arithmetic number, because the mean of its divisors is an integer number (21294711).

Almost surely, 2^80446669 is an apocalyptic number.

It is an amenable number.

80446669 is a deficient number, since it is larger than the sum of its proper divisors (4732175).

80446669 is a wasteful number, since it uses less digits than its factorization.

80446669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4732174.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 80446669 is about 8969.2067096260. The cubic root of 80446669 is about 431.6873827823.

The spelling of 80446669 in words is "eighty million, four hundred forty-six thousand, six hundred sixty-nine".