86385881 has 2 divisors, whose sum is σ = 86385882. Its totient is φ = 86385880.

The previous prime is 86385851. The next prime is 86385883. The reversal of 86385881 is 18858368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82810000 + 3575881 = 9100^2 + 1891^2 .

It is a cyclic number.

It is not a de Polignac number, because 86385881 - 2²⁶ = 19277017 is a prime.

It is a super-2 number, since 2×86385881² = 14925040872292322, which contains 22 as substring.

Together with 86385883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86385883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43192940 + 43192941.

It is an arithmetic number, because the mean of its divisors is an integer number (43192941).

Almost surely, 2^86385881 is an apocalyptic number.

It is an amenable number.

86385881 is a deficient number, since it is larger than the sum of its proper divisors (1).

86385881 is an equidigital number, since it uses as much as digits as its factorization.

86385881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 368640, while the sum is 47.

The square root of 86385881 is about 9294.4005185918. The cubic root of 86385881 is about 442.0596975802.

The spelling of 86385881 in words is "eighty-six million, three hundred eighty-five thousand, eight hundred eighty-one".