108659439 has 24 divisors (see below), whose sum is σ = 179855520. Its totient is φ = 61924608.

The previous prime is 108659437. The next prime is 108659443. The reversal of 108659439 is 934956801.

It is a happy number.

It is not a de Polignac number, because 108659439 - 2¹ = 108659437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 108659394 and 108659403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108659431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23659 + ... + 27875.

It is an arithmetic number, because the mean of its divisors is an integer number (7493980).

Almost surely, 2^108659439 is an apocalyptic number.

108659439 is a deficient number, since it is larger than the sum of its proper divisors (71196081).

108659439 is a wasteful number, since it uses less digits than its factorization.

108659439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4639 (or 4636 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 108659439 is about 10423.9838353674. The cubic root of 108659439 is about 477.1876033814.

The spelling of 108659439 in words is "one hundred eight million, six hundred fifty-nine thousand, four hundred thirty-nine".