9998200079 has 8 divisors (see below), whose sum is σ = 11435458560. Its totient is φ = 8563177656.

The previous prime is 9998200061. The next prime is 9998200087. The reversal of 9998200079 is 9700028999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9998200079 - 2⁸ = 9998199823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9998200079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998200379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549419 + ... + 567324.

It is an arithmetic number, because the mean of its divisors is an integer number (1429432320).

Almost surely, 2^9998200079 is an apocalyptic number.

9998200079 is a deficient number, since it is larger than the sum of its proper divisors (1437258481).

9998200079 is a wasteful number, since it uses less digits than its factorization.

9998200079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118029.

The product of its (nonzero) digits is 734832, while the sum is 53.

The square root of 9998200079 is about 99990.9999899991. Note that the first 4 decimals coincide. The cubic root of 9998200079 is about 2154.3054218678.

The spelling of 9998200079 in words is "nine billion, nine hundred ninety-eight million, two hundred thousand, seventy-nine".