80945447 has 8 divisors (see below), whose sum is σ = 89622912. Its totient is φ = 72487800.

The previous prime is 80945443. The next prime is 80945497. The reversal of 80945447 is 74454908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80945447 - 2² = 80945443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80945443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54179 + ... + 55652.

It is an arithmetic number, because the mean of its divisors is an integer number (11202864).

Almost surely, 2^80945447 is an apocalyptic number.

80945447 is a deficient number, since it is larger than the sum of its proper divisors (8677465).

80945447 is a wasteful number, since it uses less digits than its factorization.

80945447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109909.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 80945447 is about 8996.9687673127. The cubic root of 80945447 is about 432.5777146593.

The spelling of 80945447 in words is "eighty million, nine hundred forty-five thousand, four hundred forty-seven".