84139535 has 8 divisors (see below), whose sum is σ = 101016720. Its totient is φ = 67278784.

The previous prime is 84139513. The next prime is 84139571. The reversal of 84139535 is 53593148.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 84139535 - 2²² = 79945231 is a prime.

It is a super-2 number, since 2×84139535² = 14158922700032450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17504 + ... + 21786.

It is an arithmetic number, because the mean of its divisors is an integer number (12627090).

Almost surely, 2^84139535 is an apocalyptic number.

84139535 is a deficient number, since it is larger than the sum of its proper divisors (16877185).

84139535 is a wasteful number, since it uses less digits than its factorization.

84139535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8217.

The product of its digits is 64800, while the sum is 38.

The square root of 84139535 is about 9172.7604896236. The cubic root of 84139535 is about 438.1942783320.

The spelling of 84139535 in words is "eighty-four million, one hundred thirty-nine thousand, five hundred thirty-five".