86839481 has 8 divisors (see below), whose sum is σ = 93881280. Its totient is φ = 80044848.

The previous prime is 86839471. The next prime is 86839549. The reversal of 86839481 is 18493868.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86839481 is a prime.

It is a super-2 number, since 2×86839481² = 15082190920698722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86839411) 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, 61061 + ... + 62466.

It is an arithmetic number, because the mean of its divisors is an integer number (11735160).

Almost surely, 2^86839481 is an apocalyptic number.

It is an amenable number.

86839481 is a deficient number, since it is larger than the sum of its proper divisors (7041799).

86839481 is a wasteful number, since it uses less digits than its factorization.

86839481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123583.

The product of its digits is 331776, while the sum is 47.

The square root of 86839481 is about 9318.7703587973. The cubic root of 86839481 is about 442.8320781761.

The spelling of 86839481 in words is "eighty-six million, eight hundred thirty-nine thousand, four hundred eighty-one".