9918001 has 4 divisors (see below), whose sum is σ = 9933412. Its totient is φ = 9902592.

The previous prime is 9917989. The next prime is 9918017. The reversal of 9918001 is 1008199.

9918001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5997601 + 3920400 = 2449^2 + 1980^2 .

It is a cyclic number.

It is not a de Polignac number, because 9918001 - 2⁵ = 9917969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9918091) 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, 6696 + ... + 8041.

It is an arithmetic number, because the mean of its divisors is an integer number (2483353).

Almost surely, 2^9918001 is an apocalyptic number.

It is an amenable number.

9918001 is a deficient number, since it is larger than the sum of its proper divisors (15411).

9918001 is a wasteful number, since it uses less digits than its factorization.

9918001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15410.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 9918001 is about 3149.2857920487. The cubic root of 9918001 is about 214.8529804338.

The spelling of 9918001 in words is "nine million, nine hundred eighteen thousand, one".