84905889 has 8 divisors (see below), whose sum is σ = 119166240. Its totient is φ = 53624736.

The previous prime is 84905867. The next prime is 84905893. The reversal of 84905889 is 98850948.

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

It is not a de Polignac number, because 84905889 - 2⁷ = 84905761 is a prime.

It is a super-3 number, since 3×84905889³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (84905819) 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, 744732 + ... + 744845.

It is an arithmetic number, because the mean of its divisors is an integer number (14895780).

Almost surely, 2^84905889 is an apocalyptic number.

It is an amenable number.

84905889 is a deficient number, since it is larger than the sum of its proper divisors (34260351).

84905889 is a wasteful number, since it uses less digits than its factorization.

84905889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489599.

The product of its (nonzero) digits is 829440, while the sum is 51.

The square root of 84905889 is about 9214.4391581908. The cubic root of 84905889 is about 439.5206366881.

The spelling of 84905889 in words is "eighty-four million, nine hundred five thousand, eight hundred eighty-nine".