9918893 has 4 divisors (see below), whose sum is σ = 10440960. Its totient is φ = 9396828.

The previous prime is 9918889. The next prime is 9918917. The reversal of 9918893 is 3988199.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3988199 = 1193 ⋅3343.

It is a cyclic number.

It is not a de Polignac number, because 9918893 - 2² = 9918889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9918593) 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, 261005 + ... + 261042.

It is an arithmetic number, because the mean of its divisors is an integer number (2610240).

Almost surely, 2^9918893 is an apocalyptic number.

It is an amenable number.

9918893 is a deficient number, since it is larger than the sum of its proper divisors (522067).

9918893 is a wasteful number, since it uses less digits than its factorization.

9918893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522066.

The product of its digits is 139968, while the sum is 47.

The square root of 9918893 is about 3149.4274082760. The cubic root of 9918893 is about 214.8594213525.

The spelling of 9918893 in words is "nine million, nine hundred eighteen thousand, eight hundred ninety-three".