84140347 has 4 divisors (see below), whose sum is σ = 84409480. Its totient is φ = 83871216.

The previous prime is 84140321. The next prime is 84140363. The reversal of 84140347 is 74304148.

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 84140347 - 2⁷ = 84140219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84140317) by changing a digit.

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, 134097 + ... + 134722.

It is an arithmetic number, because the mean of its divisors is an integer number (21102370).

Almost surely, 2^84140347 is an apocalyptic number.

84140347 is a deficient number, since it is larger than the sum of its proper divisors (269133).

84140347 is a wasteful number, since it uses less digits than its factorization.

84140347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269132.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 84140347 is about 9172.8047510017. The cubic root of 84140347 is about 438.1956879452.

The spelling of 84140347 in words is "eighty-four million, one hundred forty thousand, three hundred forty-seven".