84384407 has 4 divisors (see below), whose sum is σ = 84533280. Its totient is φ = 84235536.

The previous prime is 84384367. The next prime is 84384431. The reversal of 84384407 is 70448348.

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 84384407 - 2¹⁴ = 84368023 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 (84384497) 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, 73583 + ... + 74720.

It is an arithmetic number, because the mean of its divisors is an integer number (21133320).

Almost surely, 2^84384407 is an apocalyptic number.

84384407 is a deficient number, since it is larger than the sum of its proper divisors (148873).

84384407 is a wasteful number, since it uses less digits than its factorization.

84384407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148872.

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 84384407 is about 9186.0985733879. The cubic root of 84384407 is about 438.6189601172.

The spelling of 84384407 in words is "eighty-four million, three hundred eighty-four thousand, four hundred seven".