84364989 has 8 divisors (see below), whose sum is σ = 117377472. Its totient is φ = 53797920.

The previous prime is 84364963. The next prime is 84364991. The reversal of 84364989 is 98946348.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84364989 - 2¹⁵ = 84332221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84364909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611272 + ... + 611409.

It is an arithmetic number, because the mean of its divisors is an integer number (14672184).

Almost surely, 2^84364989 is an apocalyptic number.

It is an amenable number.

84364989 is a deficient number, since it is larger than the sum of its proper divisors (33012483).

84364989 is a wasteful number, since it uses less digits than its factorization.

84364989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222707.

The product of its digits is 1492992, while the sum is 51.

The square root of 84364989 is about 9185.0415894540. The cubic root of 84364989 is about 438.5853134730.

The spelling of 84364989 in words is "eighty-four million, three hundred sixty-four thousand, nine hundred eighty-nine".