9969818 has 8 divisors (see below), whose sum is σ = 15033600. Its totient is φ = 4958620.

The previous prime is 9969809. The next prime is 9969853. The reversal of 9969818 is 8189699.

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

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, 12668 + ... + 13431.

It is an arithmetic number, because the mean of its divisors is an integer number (1879200).

Almost surely, 2^9969818 is an apocalyptic number.

9969818 is a deficient number, since it is larger than the sum of its proper divisors (5063782).

9969818 is a wasteful number, since it uses less digits than its factorization.

9969818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26292.

The product of its digits is 279936, while the sum is 50.

The square root of 9969818 is about 3157.5018606487. The cubic root of 9969818 is about 215.2265000786.

The spelling of 9969818 in words is "nine million, nine hundred sixty-nine thousand, eight hundred eighteen".