86261143 has 2 divisors, whose sum is σ = 86261144. Its totient is φ = 86261142.

The previous prime is 86261141. The next prime is 86261173. The reversal of 86261143 is 34116268.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86261143 - 2¹ = 86261141 is a prime.

Together with 86261141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86261141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43130571 + 43130572.

It is an arithmetic number, because the mean of its divisors is an integer number (43130572).

Almost surely, 2^86261143 is an apocalyptic number.

86261143 is a deficient number, since it is larger than the sum of its proper divisors (1).

86261143 is an equidigital number, since it uses as much as digits as its factorization.

86261143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 86261143 is about 9287.6877100816. The cubic root of 86261143 is about 441.8468224975.

The spelling of 86261143 in words is "eighty-six million, two hundred sixty-one thousand, one hundred forty-three".