86989205 has 4 divisors (see below), whose sum is σ = 104387052. Its totient is φ = 69591360.

The previous prime is 86989169. The next prime is 86989211. The reversal of 86989205 is 50298968.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55696369 + 31292836 = 7463^2 + 5594^2 .

It is not a de Polignac number, because 86989205 - 2¹⁸ = 86727061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86989205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8698916 + ... + 8698925.

It is an arithmetic number, because the mean of its divisors is an integer number (26096763).

Almost surely, 2^86989205 is an apocalyptic number.

It is an amenable number.

86989205 is a deficient number, since it is larger than the sum of its proper divisors (17397847).

86989205 is a wasteful number, since it uses less digits than its factorization.

86989205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17397846.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 86989205 is about 9326.8003623965. The cubic root of 86989205 is about 443.0864345304.

The spelling of 86989205 in words is "eighty-six million, nine hundred eighty-nine thousand, two hundred five".