86721119 has 2 divisors, whose sum is σ = 86721120. Its totient is φ = 86721118.

The previous prime is 86721071. The next prime is 86721133. The reversal of 86721119 is 91112768.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86721119 - 2²⁴ = 69943903 is a prime.

It is a super-2 number, since 2×86721119² = 15041104961224322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86729119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43360559 + 43360560.

It is an arithmetic number, because the mean of its divisors is an integer number (43360560).

Almost surely, 2^86721119 is an apocalyptic number.

86721119 is a deficient number, since it is larger than the sum of its proper divisors (1).

86721119 is an equidigital number, since it uses as much as digits as its factorization.

86721119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 35.

The square root of 86721119 is about 9312.4174627215. The cubic root of 86721119 is about 442.6307936855.

The spelling of 86721119 in words is "eighty-six million, seven hundred twenty-one thousand, one hundred nineteen".