86194057 has 2 divisors, whose sum is σ = 86194058. Its totient is φ = 86194056.

The previous prime is 86194033. The next prime is 86194091. The reversal of 86194057 is 75049168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79762761 + 6431296 = 8931^2 + 2536^2 .

It is a cyclic number.

It is not a de Polignac number, because 86194057 - 2¹⁹ = 85669769 is a prime.

It is not a weakly prime, because it can be changed into another prime (86194007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43097028 + 43097029.

It is an arithmetic number, because the mean of its divisors is an integer number (43097029).

Almost surely, 2^86194057 is an apocalyptic number.

It is an amenable number.

86194057 is a deficient number, since it is larger than the sum of its proper divisors (1).

86194057 is an equidigital number, since it uses as much as digits as its factorization.

86194057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 86194057 is about 9284.0754520846. The cubic root of 86194057 is about 441.7322501557.

The spelling of 86194057 in words is "eighty-six million, one hundred ninety-four thousand, fifty-seven".