86012209 has 4 divisors (see below), whose sum is σ = 87842304. Its totient is φ = 84182116.

The previous prime is 86012191. The next prime is 86012233. The reversal of 86012209 is 90221068.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 86012209 - 2⁷ = 86012081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86012609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 914977 + ... + 915070.

It is an arithmetic number, because the mean of its divisors is an integer number (21960576).

Almost surely, 2^86012209 is an apocalyptic number.

It is an amenable number.

86012209 is a deficient number, since it is larger than the sum of its proper divisors (1830095).

86012209 is a wasteful number, since it uses less digits than its factorization.

86012209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830094.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 86012209 is about 9274.2767372987. The cubic root of 86012209 is about 441.4213830801.

The spelling of 86012209 in words is "eighty-six million, twelve thousand, two hundred nine".