84546739 has 4 divisors (see below), whose sum is σ = 86831824. Its totient is φ = 82261656.

The previous prime is 84546731. The next prime is 84546757. The reversal of 84546739 is 93764548.

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

It is not a de Polignac number, because 84546739 - 2³ = 84546731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84546731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1142487 + ... + 1142560.

It is an arithmetic number, because the mean of its divisors is an integer number (21707956).

Almost surely, 2^84546739 is an apocalyptic number.

84546739 is a deficient number, since it is larger than the sum of its proper divisors (2285085).

84546739 is a wasteful number, since it uses less digits than its factorization.

84546739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285084.

The product of its digits is 725760, while the sum is 46.

The square root of 84546739 is about 9194.9300704247. The cubic root of 84546739 is about 438.9000400260.

The spelling of 84546739 in words is "eighty-four million, five hundred forty-six thousand, seven hundred thirty-nine".