9918897 has 8 divisors (see below), whose sum is σ = 13474944. Its totient is φ = 6487728.

The previous prime is 9918889. The next prime is 9918917. The reversal of 9918897 is 7988199.

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

It is not a de Polignac number, because 9918897 - 2³ = 9918889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9918877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31033 + ... + 31350.

It is an arithmetic number, because the mean of its divisors is an integer number (1684368).

Almost surely, 2^9918897 is an apocalyptic number.

It is an amenable number.

9918897 is a deficient number, since it is larger than the sum of its proper divisors (3556047).

9918897 is a wasteful number, since it uses less digits than its factorization.

9918897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62439.

The product of its digits is 326592, while the sum is 51.

The square root of 9918897 is about 3149.4280433120. The cubic root of 9918897 is about 214.8594502347.

The spelling of 9918897 in words is "nine million, nine hundred eighteen thousand, eight hundred ninety-seven".