993321001 has 4 divisors (see below), whose sum is σ = 1006928212. Its totient is φ = 979713792.

The previous prime is 993320947. The next prime is 993321023. The reversal of 993321001 is 100123399.

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 745290000 + 248031001 = 27300^2 + 15749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-993321001 is a prime.

It is a super-2 number, since 2×993321001² = 1973373222055284002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (993321041) 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, 6803496 + ... + 6803641.

It is an arithmetic number, because the mean of its divisors is an integer number (251732053).

Almost surely, 2^993321001 is an apocalyptic number.

It is an amenable number.

993321001 is a deficient number, since it is larger than the sum of its proper divisors (13607211).

993321001 is a wasteful number, since it uses less digits than its factorization.

993321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13607210.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 993321001 is about 31516.9954310369. The cubic root of 993321001 is about 997.7686919675.

The spelling of 993321001 in words is "nine hundred ninety-three million, three hundred twenty-one thousand, one".