921052993 has 8 divisors (see below), whose sum is σ = 1057923200. Its totient is φ = 785505600.

The previous prime is 921052981. The next prime is 921052999. The reversal of 921052993 is 399250129.

921052993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 921052993 - 2¹³ = 921044801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (921052999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329208 + ... + 331993.

It is an arithmetic number, because the mean of its divisors is an integer number (132240400).

Almost surely, 2^921052993 is an apocalyptic number.

It is an amenable number.

921052993 is a deficient number, since it is larger than the sum of its proper divisors (136870207).

921052993 is a wasteful number, since it uses less digits than its factorization.

921052993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661407.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 921052993 is about 30348.8548877878. The cubic root of 921052993 is about 972.9597460555.

The spelling of 921052993 in words is "nine hundred twenty-one million, fifty-two thousand, nine hundred ninety-three".