86029861 has 2 divisors, whose sum is σ = 86029862. Its totient is φ = 86029860.

The previous prime is 86029859. The next prime is 86029873. The reversal of 86029861 is 16892068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83722500 + 2307361 = 9150^2 + 1519^2 .

It is a cyclic number.

It is not a de Polignac number, because 86029861 - 2¹ = 86029859 is a prime.

It is a super-2 number, since 2×86029861² = 14802273967358642, which contains 22 as substring.

Together with 86029859, 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 (86029831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43014930 + 43014931.

It is an arithmetic number, because the mean of its divisors is an integer number (43014931).

Almost surely, 2^86029861 is an apocalyptic number.

It is an amenable number.

86029861 is a deficient number, since it is larger than the sum of its proper divisors (1).

86029861 is an equidigital number, since it uses as much as digits as its factorization.

86029861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 86029861 is about 9275.2283529841. The cubic root of 86029861 is about 441.4515781627.

The spelling of 86029861 in words is "eighty-six million, twenty-nine thousand, eight hundred sixty-one".