84999959 has 12 divisors (see below), whose sum is σ = 94719408. Its totient is φ = 76206240.

The previous prime is 84999931. The next prime is 84999979. The reversal of 84999959 is 95999948.

It is a de Polignac number, because none of the positive numbers 2^k-84999959 is a prime.

It is a super-3 number, since 3×84999959³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84999979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4022 + ... + 13644.

It is an arithmetic number, because the mean of its divisors is an integer number (7893284).

Almost surely, 2^84999959 is an apocalyptic number.

84999959 is a deficient number, since it is larger than the sum of its proper divisors (9719449).

84999959 is a wasteful number, since it uses less digits than its factorization.

84999959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9718 (or 9707 counting only the distinct ones).

The product of its digits is 9447840, while the sum is 62.

The square root of 84999959 is about 9219.5422337554. The cubic root of 84999959 is about 439.6828965217.

It can be divided in two parts, 849999 and 59, that added together give a palindrome (850058).

The spelling of 84999959 in words is "eighty-four million, nine hundred ninety-nine thousand, nine hundred fifty-nine".