84138708 has 12 divisors (see below), whose sum is σ = 196323680. Its totient is φ = 28046232.

The previous prime is 84138689. The next prime is 84138739. The reversal of 84138708 is 80783148.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3505768 + ... + 3505791.

Almost surely, 2^84138708 is an apocalyptic number.

It is an amenable number.

84138708 is an abundant number, since it is smaller than the sum of its proper divisors (112184972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84138708 is a wasteful number, since it uses less digits than its factorization.

84138708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7011566 (or 7011564 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 84138708 is about 9172.7154103897. The cubic root of 84138708 is about 438.1928426698.

The spelling of 84138708 in words is "eighty-four million, one hundred thirty-eight thousand, seven hundred eight".