80442971 has 4 divisors (see below), whose sum is σ = 91934832. Its totient is φ = 68951112.

The previous prime is 80442959. The next prime is 80443001. The reversal of 80442971 is 17924408.

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 80442971 - 2⁶ = 80442907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80442071) 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, 5745920 + ... + 5745933.

It is an arithmetic number, because the mean of its divisors is an integer number (22983708).

Almost surely, 2^80442971 is an apocalyptic number.

80442971 is a deficient number, since it is larger than the sum of its proper divisors (11491861).

80442971 is a wasteful number, since it uses less digits than its factorization.

80442971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11491860.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 80442971 is about 8969.0005574757. Note that the first 3 decimals coincide. The cubic root of 80442971 is about 431.6807680298.

The spelling of 80442971 in words is "eighty million, four hundred forty-two thousand, nine hundred seventy-one".