86401897 has 2 divisors, whose sum is σ = 86401898. Its totient is φ = 86401896.

The previous prime is 86401853. The next prime is 86401907. The reversal of 86401897 is 79810468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43943641 + 42458256 = 6629^2 + 6516^2 .

It is a cyclic number.

It is not a de Polignac number, because 86401897 - 2¹¹ = 86399849 is a prime.

It is not a weakly prime, because it can be changed into another prime (86401807) 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, 43200948 + 43200949.

It is an arithmetic number, because the mean of its divisors is an integer number (43200949).

Almost surely, 2^86401897 is an apocalyptic number.

It is an amenable number.

86401897 is a deficient number, since it is larger than the sum of its proper divisors (1).

86401897 is an equidigital number, since it uses as much as digits as its factorization.

86401897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 86401897 is about 9295.2620726906. The cubic root of 86401897 is about 442.0870152797.

The spelling of 86401897 in words is "eighty-six million, four hundred one thousand, eight hundred ninety-seven".