9969858 has 16 divisors (see below), whose sum is σ = 22155360. Its totient is φ = 3323268.

The previous prime is 9969857. The next prime is 9969859. The reversal of 9969858 is 8589699.

It is an interprime number because it is at equal distance from previous prime (9969857) and next prime (9969859).

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 184627 = 9969858 / (9 + 9 + 6 + 9 + 8 + 5 + 8).

It is not an unprimeable number, because it can be changed into a prime (9969853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92260 + ... + 92367.

It is an arithmetic number, because the mean of its divisors is an integer number (1384710).

Almost surely, 2^9969858 is an apocalyptic number.

9969858 is an abundant number, since it is smaller than the sum of its proper divisors (12185502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9969858 is a wasteful number, since it uses less digits than its factorization.

9969858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184638 (or 184632 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The square root of 9969858 is about 3157.5081947637. The cubic root of 9969858 is about 215.2267879157.

The spelling of 9969858 in words is "nine million, nine hundred sixty-nine thousand, eight hundred fifty-eight".