9998799 has 4 divisors (see below), whose sum is σ = 13331736. Its totient is φ = 6665864.

The previous prime is 9998797. The next prime is 9998801. The reversal of 9998799 is 9978999.

9998799 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (9998797) and next prime (9998801).

It is a cyclic number.

It is not a de Polignac number, because 9998799 - 2¹ = 9998797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666464 + ... + 1666469.

It is an arithmetic number, because the mean of its divisors is an integer number (3332934).

Almost surely, 2^9998799 is an apocalyptic number.

9998799 is a deficient number, since it is larger than the sum of its proper divisors (3332937).

9998799 is a wasteful number, since it uses less digits than its factorization.

9998799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332936.

The product of its digits is 3306744, while the sum is 60.

The square root of 9998799 is about 3162.0877596930. The cubic root of 9998799 is about 215.4348437377.

The spelling of 9998799 in words is "nine million, nine hundred ninety-eight thousand, seven hundred ninety-nine".