84135508 has 6 divisors (see below), whose sum is σ = 147237146. Its totient is φ = 42067752.

The previous prime is 84135503. The next prime is 84135509. The reversal of 84135508 is 80553148.

It can be written as a sum of positive squares in only one way, i.e., 46949904 + 37185604 = 6852^2 + 6098^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84135503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516935 + ... + 10516942.

Almost surely, 2^84135508 is an apocalyptic number.

It is an amenable number.

84135508 is a deficient number, since it is larger than the sum of its proper divisors (63101638).

84135508 is a wasteful number, since it uses less digits than its factorization.

84135508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21033881 (or 21033879 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 84135508 is about 9172.5409783767. The cubic root of 84135508 is about 438.1872874190.

The spelling of 84135508 in words is "eighty-four million, one hundred thirty-five thousand, five hundred eight".