80042447 has 4 divisors (see below), whose sum is σ = 80065176. Its totient is φ = 80019720.

The previous prime is 80042423. The next prime is 80042449. The reversal of 80042447 is 74424008.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80042447 - 2⁸ = 80042191 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 (80042449) 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, 4829 + ... + 13542.

It is an arithmetic number, because the mean of its divisors is an integer number (20016294).

Almost surely, 2^80042447 is an apocalyptic number.

80042447 is a deficient number, since it is larger than the sum of its proper divisors (22729).

80042447 is a wasteful number, since it uses less digits than its factorization.

80042447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22728.

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 80042447 is about 8946.6444547663. The cubic root of 80042447 is about 430.9631322731.

The spelling of 80042447 in words is "eighty million, forty-two thousand, four hundred forty-seven".