9998995 has 4 divisors (see below), whose sum is σ = 11998800. Its totient is φ = 7999192.

The previous prime is 9998977. The next prime is 9999047. The reversal of 9998995 is 5998999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5998999 = 1999 ⋅3001.

It is a cyclic number.

It is not a de Polignac number, because 9998995 - 2⁷ = 9998867 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999895 + ... + 999904.

It is an arithmetic number, because the mean of its divisors is an integer number (2999700).

Almost surely, 2^9998995 is an apocalyptic number.

9998995 is a deficient number, since it is larger than the sum of its proper divisors (1999805).

9998995 is a wasteful number, since it uses less digits than its factorization.

9998995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999804.

The product of its digits is 2361960, while the sum is 58.

The square root of 9998995 is about 3162.1187517233. The cubic root of 9998995 is about 215.4362514052.

The spelling of 9998995 in words is "nine million, nine hundred ninety-eight thousand, nine hundred ninety-five".