86135391 has 36 divisors (see below), whose sum is σ = 134460144. Its totient is φ = 53032320.

The previous prime is 86135369. The next prime is 86135411. The reversal of 86135391 is 19353168.

It is a happy number.

86135391 is a `hidden beast` number, since 8 + 613 + 5 + 39 + 1 = 666.

It is not a de Polignac number, because 86135391 - 2⁶ = 86135327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86135351) 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 35 ways as a sum of consecutive naturals, for example, 198711 + ... + 199143.

It is an arithmetic number, because the mean of its divisors is an integer number (3735004).

Almost surely, 2^86135391 is an apocalyptic number.

86135391 is a deficient number, since it is larger than the sum of its proper divisors (48324753).

86135391 is a wasteful number, since it uses less digits than its factorization.

86135391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 490 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 86135391 is about 9280.9154182117. The cubic root of 86135391 is about 441.6320091155.

The spelling of 86135391 in words is "eighty-six million, one hundred thirty-five thousand, three hundred ninety-one".