993054721 has 8 divisors (see below), whose sum is σ = 998424000. Its totient is φ = 987700560.

The previous prime is 993054709. The next prime is 993054761. The reversal of 993054721 is 127450399.

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

It is a cyclic number.

It is not a de Polignac number, because 993054721 - 2⁷ = 993054593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (993054761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142836 + ... + 149626.

It is an arithmetic number, because the mean of its divisors is an integer number (124803000).

Almost surely, 2^993054721 is an apocalyptic number.

It is an amenable number.

993054721 is a deficient number, since it is larger than the sum of its proper divisors (5369279).

993054721 is a wasteful number, since it uses less digits than its factorization.

993054721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7559.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 993054721 is about 31512.7707604393. The cubic root of 993054721 is about 997.6795265680.

The spelling of 993054721 in words is "nine hundred ninety-three million, fifty-four thousand, seven hundred twenty-one".