83859489 has 16 divisors (see below), whose sum is σ = 141984640. Its totient is φ = 47919600.

The previous prime is 83859467. The next prime is 83859491. The reversal of 83859489 is 98495838.

It is a happy number.

83859489 is a `hidden beast` number, since 83 + 85 + 9 + 489 = 666.

It is not a de Polignac number, because 83859489 - 2¹² = 83855393 is a prime.

It is a super-2 number, since 2×83859489² = 14064827790682242, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83859499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221662 + ... + 222039.

It is an arithmetic number, because the mean of its divisors is an integer number (8874040).

Almost surely, 2^83859489 is an apocalyptic number.

It is an amenable number.

83859489 is a deficient number, since it is larger than the sum of its proper divisors (58125151).

83859489 is a wasteful number, since it uses less digits than its factorization.

83859489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443717 (or 443711 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 83859489 is about 9157.4826781163. The cubic root of 83859489 is about 437.7075830152.

It can be divided in two parts, 83859 and 489, that added together give a palindrome (84348).

The spelling of 83859489 in words is "eighty-three million, eight hundred fifty-nine thousand, four hundred eighty-nine".