80950091 has 2 divisors, whose sum is σ = 80950092. Its totient is φ = 80950090.

The previous prime is 80950081. The next prime is 80950109. The reversal of 80950091 is 19005908.

Together with next prime (80950109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80950091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80950081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40475045 + 40475046.

It is an arithmetic number, because the mean of its divisors is an integer number (40475046).

Almost surely, 2^80950091 is an apocalyptic number.

80950091 is a deficient number, since it is larger than the sum of its proper divisors (1).

80950091 is an equidigital number, since it uses as much as digits as its factorization.

80950091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 80950091 is about 8997.2268505357. The cubic root of 80950091 is about 432.5859871134.

Adding to 80950091 its reverse (19005908), we get a palindrome (99955999).

The spelling of 80950091 in words is "eighty million, nine hundred fifty thousand, ninety-one".