80986121 has 2 divisors, whose sum is σ = 80986122. Its totient is φ = 80986120.

The previous prime is 80986117. The next prime is 80986177. The reversal of 80986121 is 12168908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64176121 + 16810000 = 8011^2 + 4100^2 .

It is a cyclic number.

It is not a de Polignac number, because 80986121 - 2² = 80986117 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80988121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40493060 + 40493061.

It is an arithmetic number, because the mean of its divisors is an integer number (40493061).

Almost surely, 2^80986121 is an apocalyptic number.

It is an amenable number.

80986121 is a deficient number, since it is larger than the sum of its proper divisors (1).

80986121 is an equidigital number, since it uses as much as digits as its factorization.

80986121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 80986121 is about 8999.2289114124. The cubic root of 80986121 is about 432.6501573574.

The spelling of 80986121 in words is "eighty million, nine hundred eighty-six thousand, one hundred twenty-one".