989097747 has 32 divisors (see below), whose sum is σ = 1462454784. Its totient is φ = 589632000.

The previous prime is 989097721. The next prime is 989097761. The reversal of 989097747 is 747790989.

It is not a de Polignac number, because 989097747 - 2⁸ = 989097491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (989097047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 555723 + ... + 557499.

It is an arithmetic number, because the mean of its divisors is an integer number (45701712).

Almost surely, 2^989097747 is an apocalyptic number.

989097747 is a deficient number, since it is larger than the sum of its proper divisors (473357037).

989097747 is a wasteful number, since it uses less digits than its factorization.

989097747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059.

The product of its (nonzero) digits is 8001504, while the sum is 60.

The square root of 989097747 is about 31449.9244355213. The cubic root of 989097747 is about 996.3526285220.

The spelling of 989097747 in words is "nine hundred eighty-nine million, ninety-seven thousand, seven hundred forty-seven".