80470009 has 4 divisors (see below), whose sum is σ = 80520804. Its totient is φ = 80419216.

The previous prime is 80470007. The next prime is 80470021. The reversal of 80470009 is 90007408.

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 20748025 + 59721984 = 4555^2 + 7728^2 .

It is a cyclic number.

It is not a de Polignac number, because 80470009 - 2¹ = 80470007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80470001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22942 + ... + 26215.

It is an arithmetic number, because the mean of its divisors is an integer number (20130201).

Almost surely, 2^80470009 is an apocalyptic number.

It is an amenable number.

80470009 is a deficient number, since it is larger than the sum of its proper divisors (50795).

80470009 is a wasteful number, since it uses less digits than its factorization.

80470009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50794.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 80470009 is about 8970.5077336793. The cubic root of 80470009 is about 431.7291272464.

The spelling of 80470009 in words is "eighty million, four hundred seventy thousand, nine".