86499405 has 12 divisors (see below), whose sum is σ = 149932380. Its totient is φ = 46132992.

The previous prime is 86499397. The next prime is 86499407. The reversal of 86499405 is 50499468.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16793604 + 69705801 = 4098^2 + 8349^2 .

It is not a de Polignac number, because 86499405 - 2³ = 86499397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1922209 = 86499405 / (8 + 6 + 4 + 9 + 9 + 4 + 0 + 5).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86499407) 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 in 11 ways as a sum of consecutive naturals, for example, 961060 + ... + 961149.

It is an arithmetic number, because the mean of its divisors is an integer number (12494365).

Almost surely, 2^86499405 is an apocalyptic number.

It is an amenable number.

86499405 is a deficient number, since it is larger than the sum of its proper divisors (63432975).

86499405 is a wasteful number, since it uses less digits than its factorization.

86499405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922220 (or 1922217 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 86499405 is about 9300.5056314160. The cubic root of 86499405 is about 442.2532570574.

The spelling of 86499405 in words is "eighty-six million, four hundred ninety-nine thousand, four hundred five".