9993291 has 16 divisors (see below), whose sum is σ = 16612608. Its totient is φ = 5191200.

The previous prime is 9993289. The next prime is 9993317. The reversal of 9993291 is 1923999.

It is a happy number.

9993291 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9993291 - 2¹ = 9993289 is a prime.

9993291 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9993271) 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, 21400 + ... + 21861.

It is an arithmetic number, because the mean of its divisors is an integer number (1038288).

Almost surely, 2^9993291 is an apocalyptic number.

9993291 is a deficient number, since it is larger than the sum of its proper divisors (6619317).

9993291 is a wasteful number, since it uses less digits than its factorization.

9993291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43282.

The product of its digits is 39366, while the sum is 42.

The square root of 9993291 is about 3161.2166961472. The cubic root of 9993291 is about 215.3952778833.

The spelling of 9993291 in words is "nine million, nine hundred ninety-three thousand, two hundred ninety-one".