86989145 has 4 divisors (see below), whose sum is σ = 104386980. Its totient is φ = 69591312.

The previous prime is 86989139. The next prime is 86989157. The reversal of 86989145 is 54198968.

It is a happy number.

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 21492496 + 65496649 = 4636^2 + 8093^2 .

It is a cyclic number.

It is not a de Polignac number, because 86989145 - 2¹² = 86985049 is a prime.

It is a super-2 number, since 2×86989145² = 15134222695662050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 86989093 and 86989102.

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, 8698910 + ... + 8698919.

It is an arithmetic number, because the mean of its divisors is an integer number (26096745).

Almost surely, 2^86989145 is an apocalyptic number.

It is an amenable number.

86989145 is a deficient number, since it is larger than the sum of its proper divisors (17397835).

86989145 is a wasteful number, since it uses less digits than its factorization.

86989145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17397834.

The product of its digits is 622080, while the sum is 50.

The square root of 86989145 is about 9326.7971458588. The cubic root of 86989145 is about 443.0863326588.

The spelling of 86989145 in words is "eighty-six million, nine hundred eighty-nine thousand, one hundred forty-five".