989346538 has 4 divisors (see below), whose sum is σ = 1484019810. Its totient is φ = 494673268.

The previous prime is 989346509. The next prime is 989346581. The reversal of 989346538 is 835643989.

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

It can be written as a sum of positive squares in only one way, i.e., 646837489 + 342509049 = 25433^2 + 18507^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247336633 + ... + 247336636.

Almost surely, 2^989346538 is an apocalyptic number.

989346538 is a deficient number, since it is larger than the sum of its proper divisors (494673272).

989346538 is a wasteful number, since it uses less digits than its factorization.

989346538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494673271.

The product of its digits is 5598720, while the sum is 55.

The square root of 989346538 is about 31453.8795381428. The cubic root of 989346538 is about 996.4361601335.

The spelling of 989346538 in words is "nine hundred eighty-nine million, three hundred forty-six thousand, five hundred thirty-eight".