84191039 has 8 divisors (see below), whose sum is σ = 85134960. Its totient is φ = 83252736.

The previous prime is 84191027. The next prime is 84191057. The reversal of 84191039 is 93019148.

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 84191039 - 2²⁰ = 83142463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84191059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33329 + ... + 35765.

It is an arithmetic number, because the mean of its divisors is an integer number (10641870).

Almost surely, 2^84191039 is an apocalyptic number.

84191039 is a deficient number, since it is larger than the sum of its proper divisors (943921).

84191039 is a wasteful number, since it uses less digits than its factorization.

84191039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 84191039 is about 9175.5675028850. The cubic root of 84191039 is about 438.2836701369.

The spelling of 84191039 in words is "eighty-four million, one hundred ninety-one thousand, thirty-nine".