989028616 has 8 divisors (see below), whose sum is σ = 1854428670. Its totient is φ = 494514304.

The previous prime is 989028583. The next prime is 989028617. The reversal of 989028616 is 616820989.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 770284516 + 218744100 = 27754^2 + 14790^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 989028616.

It is not an unprimeable number, because it can be changed into a prime (989028617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61814281 + ... + 61814296.

Almost surely, 2^989028616 is an apocalyptic number.

It is an amenable number.

989028616 is a deficient number, since it is larger than the sum of its proper divisors (865400054).

989028616 is a wasteful number, since it uses less digits than its factorization.

989028616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123628583 (or 123628579 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 989028616 is about 31448.8253516725. The cubic root of 989028616 is about 996.3294152927.

The spelling of 989028616 in words is "nine hundred eighty-nine million, twenty-eight thousand, six hundred sixteen".