989414999 has 4 divisors (see below), whose sum is σ = 992792136. Its totient is φ = 986037864.

The previous prime is 989414893. The next prime is 989415017. The reversal of 989414999 is 999414989.

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-989414999 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989474999) 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, 1688129 + ... + 1688714.

It is an arithmetic number, because the mean of its divisors is an integer number (248198034).

Almost surely, 2^989414999 is an apocalyptic number.

989414999 is a deficient number, since it is larger than the sum of its proper divisors (3377137).

989414999 is a wasteful number, since it uses less digits than its factorization.

989414999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3377136.

The product of its digits is 7558272, while the sum is 62.

The square root of 989414999 is about 31454.9677952466. The cubic root of 989414999 is about 996.4591434664.

The spelling of 989414999 in words is "nine hundred eighty-nine million, four hundred fourteen thousand, nine hundred ninety-nine".