9828838997 has 2 divisors, whose sum is σ = 9828838998. Its totient is φ = 9828838996.

The previous prime is 9828838979. The next prime is 9828839071. The reversal of 9828838997 is 7998388289.

Together with previous prime (9828838979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9769147921 + 59691076 = 98839^2 + 7726^2 .

It is an emirp because it is prime and its reverse (7998388289) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9828838997 - 2⁶ = 9828838933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9828838997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9828838967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4914419498 + 4914419499.

It is an arithmetic number, because the mean of its divisors is an integer number (4914419499).

Almost surely, 2^9828838997 is an apocalyptic number.

It is an amenable number.

9828838997 is a deficient number, since it is larger than the sum of its proper divisors (1).

9828838997 is an equidigital number, since it uses as much as digits as its factorization.

9828838997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 125411328, while the sum is 71.

The square root of 9828838997 is about 99140.5012948795. The cubic root of 9828838997 is about 2142.0720459313.

The spelling of 9828838997 in words is "nine billion, eight hundred twenty-eight million, eight hundred thirty-eight thousand, nine hundred ninety-seven".