993289521 has 16 divisors (see below), whose sum is σ = 1515164544. Its totient is φ = 567001344.

The previous prime is 993289511. The next prime is 993289529. The reversal of 993289521 is 125982399.

993289521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 993289521 - 2⁵ = 993289489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (993289529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3690 + ... + 44723.

It is an arithmetic number, because the mean of its divisors is an integer number (94697784).

Almost surely, 2^993289521 is an apocalyptic number.

It is an amenable number.

993289521 is a deficient number, since it is larger than the sum of its proper divisors (521875023).

993289521 is a wasteful number, since it uses less digits than its factorization.

993289521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49400.

The product of its digits is 349920, while the sum is 48.

The square root of 993289521 is about 31516.4960139924. The cubic root of 993289521 is about 997.7581515379.

The spelling of 993289521 in words is "nine hundred ninety-three million, two hundred eighty-nine thousand, five hundred twenty-one".