84374709 has 4 divisors (see below), whose sum is σ = 112499616. Its totient is φ = 56249804.

The previous prime is 84374699. The next prime is 84374711. The reversal of 84374709 is 90747348.

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 84374709 - 2¹² = 84370613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84374749) 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, 14062449 + ... + 14062454.

It is an arithmetic number, because the mean of its divisors is an integer number (28124904).

Almost surely, 2^84374709 is an apocalyptic number.

It is an amenable number.

84374709 is a deficient number, since it is larger than the sum of its proper divisors (28124907).

84374709 is a wasteful number, since it uses less digits than its factorization.

84374709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28124906.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 84374709 is about 9185.5706953896. The cubic root of 84374709 is about 438.6021565007.

The spelling of 84374709 in words is "eighty-four million, three hundred seventy-four thousand, seven hundred nine".