80891473 has 4 divisors (see below), whose sum is σ = 87113908. Its totient is φ = 74669040.

The previous prime is 80891453. The next prime is 80891533. The reversal of 80891473 is 37419808.

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 11135569 + 69755904 = 3337^2 + 8352^2 .

It is a cyclic number.

It is not a de Polignac number, because 80891473 - 2⁵ = 80891441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80891413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3111198 + ... + 3111223.

It is an arithmetic number, because the mean of its divisors is an integer number (21778477).

Almost surely, 2^80891473 is an apocalyptic number.

It is an amenable number.

80891473 is a deficient number, since it is larger than the sum of its proper divisors (6222435).

80891473 is a wasteful number, since it uses less digits than its factorization.

80891473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6222434.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 80891473 is about 8993.9687013020. The cubic root of 80891473 is about 432.4815464300.

The spelling of 80891473 in words is "eighty million, eight hundred ninety-one thousand, four hundred seventy-three".