84709887 has 16 divisors (see below), whose sum is σ = 118241280. Its totient is φ = 53877600.

The previous prime is 84709853. The next prime is 84709901. The reversal of 84709887 is 78890748.

It is not a de Polignac number, because 84709887 - 2⁸ = 84709631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84709187) 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, 189 + ... + 13017.

It is an arithmetic number, because the mean of its divisors is an integer number (7390080).

Almost surely, 2^84709887 is an apocalyptic number.

84709887 is a deficient number, since it is larger than the sum of its proper divisors (33531393).

84709887 is a wasteful number, since it uses less digits than its factorization.

84709887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12934.

The product of its (nonzero) digits is 903168, while the sum is 51.

The square root of 84709887 is about 9203.7974228033. The cubic root of 84709887 is about 439.1821705779.

The spelling of 84709887 in words is "eighty-four million, seven hundred nine thousand, eight hundred eighty-seven".