86719489 has 4 divisors (see below), whose sum is σ = 86938324. Its totient is φ = 86500656.

The previous prime is 86719487. The next prime is 86719517. The reversal of 86719489 is 98491768.

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 63361600 + 23357889 = 7960^2 + 4833^2 .

It is a cyclic number.

It is not a de Polignac number, because 86719489 - 2¹ = 86719487 is a prime.

It is a super-2 number, since 2×86719489² = 15040539544842242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86719487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108822 + ... + 109615.

It is an arithmetic number, because the mean of its divisors is an integer number (21734581).

Almost surely, 2^86719489 is an apocalyptic number.

It is an amenable number.

86719489 is a deficient number, since it is larger than the sum of its proper divisors (218835).

86719489 is a wasteful number, since it uses less digits than its factorization.

86719489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218834.

The product of its digits is 870912, while the sum is 52.

The square root of 86719489 is about 9312.3299447560. The cubic root of 86719489 is about 442.6280204559.

The spelling of 86719489 in words is "eighty-six million, seven hundred nineteen thousand, four hundred eighty-nine".