80047791 has 16 divisors (see below), whose sum is σ = 118810720. Its totient is φ = 53265600.

The previous prime is 80047771. The next prime is 80047813. The reversal of 80047791 is 19774008.

It is not a de Polignac number, because 80047791 - 2⁶ = 80047727 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 (80047711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13761 + ... + 18693.

It is an arithmetic number, because the mean of its divisors is an integer number (7425670).

Almost surely, 2^80047791 is an apocalyptic number.

80047791 is a deficient number, since it is larger than the sum of its proper divisors (38762929).

80047791 is a wasteful number, since it uses less digits than its factorization.

80047791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5543 (or 5537 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 80047791 is about 8946.9431092413. The cubic root of 80047791 is about 430.9727230832.

The spelling of 80047791 in words is "eighty million, forty-seven thousand, seven hundred ninety-one".