86405801 has 2 divisors, whose sum is σ = 86405802. Its totient is φ = 86405800.

The previous prime is 86405777. The next prime is 86405827. The reversal of 86405801 is 10850468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78340201 + 8065600 = 8851^2 + 2840^2 .

It is a cyclic number.

It is not a de Polignac number, because 86405801 - 2¹⁸ = 86143657 is a prime.

It is not a weakly prime, because it can be changed into another prime (86405831) 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, 43202900 + 43202901.

It is an arithmetic number, because the mean of its divisors is an integer number (43202901).

Almost surely, 2^86405801 is an apocalyptic number.

It is an amenable number.

86405801 is a deficient number, since it is larger than the sum of its proper divisors (1).

86405801 is an equidigital number, since it uses as much as digits as its factorization.

86405801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 86405801 is about 9295.4720697768. The cubic root of 86405801 is about 442.0936736278.

It can be divided in two parts, 8640 and 5801, that added together give a palindrome (14441).

The spelling of 86405801 in words is "eighty-six million, four hundred five thousand, eight hundred one".