84387329 has 4 divisors (see below), whose sum is σ = 90878676. Its totient is φ = 77895984.

The previous prime is 84387323. The next prime is 84387353. The reversal of 84387329 is 92378348.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13490929 + 70896400 = 3673^2 + 8420^2 .

It is a cyclic number.

It is not a de Polignac number, because 84387329 - 2⁴ = 84387313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84387329.

It is not an unprimeable number, because it can be changed into a prime (84387323) 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, 3245654 + ... + 3245679.

It is an arithmetic number, because the mean of its divisors is an integer number (22719669).

Almost surely, 2^84387329 is an apocalyptic number.

It is an amenable number.

84387329 is a deficient number, since it is larger than the sum of its proper divisors (6491347).

84387329 is a wasteful number, since it uses less digits than its factorization.

84387329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6491346.

The product of its digits is 290304, while the sum is 44.

The square root of 84387329 is about 9186.2576166794. The cubic root of 84387329 is about 438.6240227817.

The spelling of 84387329 in words is "eighty-four million, three hundred eighty-seven thousand, three hundred twenty-nine".