84347407 has 4 divisors (see below), whose sum is σ = 84423640. Its totient is φ = 84271176.

The previous prime is 84347401. The next prime is 84347411. The reversal of 84347407 is 70474348.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84347407 is a prime.

It is a super-3 number, since 3×84347407³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84347401) 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, 36432 + ... + 38677.

It is an arithmetic number, because the mean of its divisors is an integer number (21105910).

Almost surely, 2^84347407 is an apocalyptic number.

84347407 is a deficient number, since it is larger than the sum of its proper divisors (76233).

84347407 is a wasteful number, since it uses less digits than its factorization.

84347407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76232.

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 84347407 is about 9184.0844399428. The cubic root of 84347407 is about 438.5548437137.

The spelling of 84347407 in words is "eighty-four million, three hundred forty-seven thousand, four hundred seven".