84115039 has 4 divisors (see below), whose sum is σ = 84140056. Its totient is φ = 84090024.

The previous prime is 84115037. The next prime is 84115069. The reversal of 84115039 is 93051148.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84115039 - 2¹ = 84115037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84115039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84115037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6504 + ... + 14509.

It is an arithmetic number, because the mean of its divisors is an integer number (21035014).

Almost surely, 2^84115039 is an apocalyptic number.

84115039 is a deficient number, since it is larger than the sum of its proper divisors (25017).

84115039 is a wasteful number, since it uses less digits than its factorization.

84115039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25016.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 84115039 is about 9171.4251346233. The cubic root of 84115039 is about 438.1517495774.

The spelling of 84115039 in words is "eighty-four million, one hundred fifteen thousand, thirty-nine".