989738503 has 4 divisors (see below), whose sum is σ = 1065872248. Its totient is φ = 913604760.

The previous prime is 989738489. The next prime is 989738531. The reversal of 989738503 is 305837989.

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

It is a cyclic number.

It is not a de Polignac number, because 989738503 - 2²⁵ = 956184071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989738543) 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, 38066853 + ... + 38066878.

It is an arithmetic number, because the mean of its divisors is an integer number (266468062).

Almost surely, 2^989738503 is an apocalyptic number.

989738503 is a deficient number, since it is larger than the sum of its proper divisors (76133745).

989738503 is a wasteful number, since it uses less digits than its factorization.

989738503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76133744.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 989738503 is about 31460.1097105525. The cubic root of 989738503 is about 996.5677340282.

It can be divided in two parts, 9897 and 38503, that added together give a square (48400 = 220²).

The spelling of 989738503 in words is "nine hundred eighty-nine million, seven hundred thirty-eight thousand, five hundred three".