80438845 has 4 divisors (see below), whose sum is σ = 96526620. Its totient is φ = 64351072.

The previous prime is 80438833. The next prime is 80438863. The reversal of 80438845 is 54883408.

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 11930116 + 68508729 = 3454^2 + 8277^2 .

It is a cyclic number.

It is not a de Polignac number, because 80438845 - 2¹⁵ = 80406077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80438798 and 80438807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8043880 + ... + 8043889.

It is an arithmetic number, because the mean of its divisors is an integer number (24131655).

Almost surely, 2^80438845 is an apocalyptic number.

It is an amenable number.

80438845 is a deficient number, since it is larger than the sum of its proper divisors (16087775).

80438845 is a wasteful number, since it uses less digits than its factorization.

80438845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16087774.

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 80438845 is about 8968.7705400462. The cubic root of 80438845 is about 431.6733874583.

The spelling of 80438845 in words is "eighty million, four hundred thirty-eight thousand, eight hundred forty-five".