86189769 has 12 divisors (see below), whose sum is σ = 128789700. Its totient is φ = 55478304.

The previous prime is 86189731. The next prime is 86189771. The reversal of 86189769 is 96798168.

It can be written as a sum of positive squares in 2 ways, for example, as 65804544 + 20385225 = 8112^2 + 4515^2 .

It is not a de Polignac number, because 86189769 - 2¹¹ = 86187721 is a prime.

It is a super-2 number, since 2×86189769² = 14857352560546722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86189569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164854 + ... + 165375.

It is an arithmetic number, because the mean of its divisors is an integer number (10732475).

Almost surely, 2^86189769 is an apocalyptic number.

It is an amenable number.

86189769 is a deficient number, since it is larger than the sum of its proper divisors (42599931).

86189769 is a wasteful number, since it uses less digits than its factorization.

86189769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330264 (or 330261 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 86189769 is about 9283.8445161474. The cubic root of 86189769 is about 441.7249249048.

The spelling of 86189769 in words is "eighty-six million, one hundred eighty-nine thousand, seven hundred sixty-nine".