84939559 has 4 divisors (see below), whose sum is σ = 85050216. Its totient is φ = 84828904.

The previous prime is 84939523. The next prime is 84939571. The reversal of 84939559 is 95593948.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84939559 - 2⁷ = 84939431 is a prime.

It is a super-2 number, since 2×84939559² = 14429457366228962, which contains 22 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 (84939859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54169 + ... + 55714.

It is an arithmetic number, because the mean of its divisors is an integer number (21262554).

Almost surely, 2^84939559 is an apocalyptic number.

84939559 is a deficient number, since it is larger than the sum of its proper divisors (110657).

84939559 is a wasteful number, since it uses less digits than its factorization.

84939559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110656.

The product of its digits is 1749600, while the sum is 52.

The square root of 84939559 is about 9216.2660009355. The cubic root of 84939559 is about 439.5787272959.

The spelling of 84939559 in words is "eighty-four million, nine hundred thirty-nine thousand, five hundred fifty-nine".