86989479 has 8 divisors (see below), whose sum is σ = 119120880. Its totient is φ = 56425536.

The previous prime is 86989421. The next prime is 86989523. The reversal of 86989479 is 97498968.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86989479 - 2¹¹ = 86987431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86989079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391734 + ... + 391955.

It is an arithmetic number, because the mean of its divisors is an integer number (14890110).

Almost surely, 2^86989479 is an apocalyptic number.

86989479 is a deficient number, since it is larger than the sum of its proper divisors (32131401).

86989479 is a wasteful number, since it uses less digits than its factorization.

86989479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783729.

The product of its digits is 7838208, while the sum is 60.

The square root of 86989479 is about 9326.8150512380. The cubic root of 86989479 is about 443.0868997435.

The spelling of 86989479 in words is "eighty-six million, nine hundred eighty-nine thousand, four hundred seventy-nine".