80476289 has 4 divisors (see below), whose sum is σ = 80677380. Its totient is φ = 80275200.

The previous prime is 80476271. The next prime is 80476303. The reversal of 80476289 is 98267408.

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 63600625 + 16875664 = 7975^2 + 4108^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80476289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80476489) 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, 99944 + ... + 100745.

It is an arithmetic number, because the mean of its divisors is an integer number (20169345).

Almost surely, 2^80476289 is an apocalyptic number.

It is an amenable number.

80476289 is a deficient number, since it is larger than the sum of its proper divisors (201091).

80476289 is a wasteful number, since it uses less digits than its factorization.

80476289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201090.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 80476289 is about 8970.8577627783. The cubic root of 80476289 is about 431.7403578834.

The spelling of 80476289 in words is "eighty million, four hundred seventy-six thousand, two hundred eighty-nine".