84398398389 has 16 divisors (see below), whose sum is σ = 125047104000. Its totient is φ = 56260001088.

The previous prime is 84398398351. The next prime is 84398398391. The reversal of 84398398389 is 98389389348.

84398398389 is a `hidden beast` number, since 8 + 439 + 8 + 39 + 83 + 89 = 666.

It is not a de Polignac number, because 84398398389 - 2¹⁵ = 84398365621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84398398319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130477 + ... + 431069.

It is an arithmetic number, because the mean of its divisors is an integer number (7815444000).

Almost surely, 2^84398398389 is an apocalyptic number.

It is an amenable number.

84398398389 is a deficient number, since it is larger than the sum of its proper divisors (40648705611).

84398398389 is a wasteful number, since it uses less digits than its factorization.

84398398389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311001 (or 310995 counting only the distinct ones).

The product of its digits is 322486272, while the sum is 72.

The spelling of 84398398389 in words is "eighty-four billion, three hundred ninety-eight million, three hundred ninety-eight thousand, three hundred eighty-nine".