80046991 has 4 divisors (see below), whose sum is σ = 82629184. Its totient is φ = 77464800.

The previous prime is 80046983. The next prime is 80047003. The reversal of 80046991 is 19964008.

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 80046991 - 2³ = 80046983 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 80046991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80046691) 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, 1291050 + ... + 1291111.

It is an arithmetic number, because the mean of its divisors is an integer number (20657296).

Almost surely, 2^80046991 is an apocalyptic number.

80046991 is a deficient number, since it is larger than the sum of its proper divisors (2582193).

80046991 is a wasteful number, since it uses less digits than its factorization.

80046991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582192.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 80046991 is about 8946.8984011220. The cubic root of 80046991 is about 430.9712873604.

The spelling of 80046991 in words is "eighty million, forty-six thousand, nine hundred ninety-one".