84393709 has 4 divisors (see below), whose sum is σ = 84535200. Its totient is φ = 84252220.

The previous prime is 84393697. The next prime is 84393719. The reversal of 84393709 is 90739348.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84393709 - 2⁵ = 84393677 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 (84393719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69847 + ... + 71044.

It is an arithmetic number, because the mean of its divisors is an integer number (21133800).

Almost surely, 2^84393709 is an apocalyptic number.

It is an amenable number.

84393709 is a deficient number, since it is larger than the sum of its proper divisors (141491).

84393709 is a wasteful number, since it uses less digits than its factorization.

84393709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141490.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 84393709 is about 9186.6048679586. The cubic root of 84393709 is about 438.6350763793.

The spelling of 84393709 in words is "eighty-four million, three hundred ninety-three thousand, seven hundred nine".