86136249 has 4 divisors (see below), whose sum is σ = 114848336. Its totient is φ = 57424164.

The previous prime is 86136233. The next prime is 86136287. The reversal of 86136249 is 94263168.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 86136249 - 2⁴ = 86136233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86136049) 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 3 ways as a sum of consecutive naturals, for example, 14356039 + ... + 14356044.

It is an arithmetic number, because the mean of its divisors is an integer number (28712084).

Almost surely, 2^86136249 is an apocalyptic number.

It is an amenable number.

86136249 is a deficient number, since it is larger than the sum of its proper divisors (28712087).

86136249 is a wasteful number, since it uses less digits than its factorization.

86136249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28712086.

The product of its digits is 62208, while the sum is 39.

The square root of 86136249 is about 9280.9616419852. The cubic root of 86136249 is about 441.6334754853.

The spelling of 86136249 in words is "eighty-six million, one hundred thirty-six thousand, two hundred forty-nine".