921973393 has 8 divisors (see below), whose sum is σ = 1064953440. Its totient is φ = 788854080.

The previous prime is 921973373. The next prime is 921973397. The reversal of 921973393 is 393379129.

921973393 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 a de Polignac number, because none of the positive numbers 2^k-921973393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (921973397) 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, 2464983 + ... + 2465356.

It is an arithmetic number, because the mean of its divisors is an integer number (133119180).

Almost surely, 2^921973393 is an apocalyptic number.

It is an amenable number.

921973393 is a deficient number, since it is larger than the sum of its proper divisors (142980047).

921973393 is a wasteful number, since it uses less digits than its factorization.

921973393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4930367.

The product of its digits is 275562, while the sum is 46.

The square root of 921973393 is about 30364.0147707776. The cubic root of 921973393 is about 973.2837281464.

The spelling of 921973393 in words is "nine hundred twenty-one million, nine hundred seventy-three thousand, three hundred ninety-three".