80002191 has 4 divisors (see below), whose sum is σ = 106669592. Its totient is φ = 53334792.

The previous prime is 80002147. The next prime is 80002199. The reversal of 80002191 is 19120008.

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

It is not a de Polignac number, because 80002191 - 2²⁵ = 46447759 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 (80002199) 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, 13333696 + ... + 13333701.

It is an arithmetic number, because the mean of its divisors is an integer number (26667398).

Almost surely, 2^80002191 is an apocalyptic number.

80002191 is a deficient number, since it is larger than the sum of its proper divisors (26667401).

80002191 is a wasteful number, since it uses less digits than its factorization.

80002191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26667400.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 80002191 is about 8944.3943897840. The cubic root of 80002191 is about 430.8908716091.

Adding to 80002191 its reverse (19120008), we get a palindrome (99122199).

The spelling of 80002191 in words is "eighty million, two thousand, one hundred ninety-one".