9898239628 has 6 divisors (see below), whose sum is σ = 17321919356. Its totient is φ = 4949119812.

The previous prime is 9898239619. The next prime is 9898239629. The reversal of 9898239628 is 8269328989.

It is a self number, because there is not a number n which added to its sum of digits gives 9898239628.

It is not an unprimeable number, because it can be changed into a prime (9898239629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1237279950 + ... + 1237279957.

Almost surely, 2^9898239628 is an apocalyptic number.

It is an amenable number.

9898239628 is a deficient number, since it is larger than the sum of its proper divisors (7423679728).

9898239628 is a wasteful number, since it uses less digits than its factorization.

9898239628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474559911 (or 2474559909 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 64.

The square root of 9898239628 is about 99489.8971152348. The cubic root of 9898239628 is about 2147.1018913701.

The spelling of 9898239628 in words is "nine billion, eight hundred ninety-eight million, two hundred thirty-nine thousand, six hundred twenty-eight".