920975993 has 8 divisors (see below), whose sum is σ = 1086497280. Its totient is φ = 763943040.

The previous prime is 920975953. The next prime is 920976011. The reversal of 920975993 is 399579029.

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

It is not a de Polignac number, because 920975993 - 2¹² = 920971897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920975953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2121848 + ... + 2122281.

It is an arithmetic number, because the mean of its divisors is an integer number (135812160).

Almost surely, 2^920975993 is an apocalyptic number.

It is an amenable number.

920975993 is a deficient number, since it is larger than the sum of its proper divisors (165521287).

920975993 is a wasteful number, since it uses less digits than its factorization.

920975993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4244167.

The product of its (nonzero) digits is 1377810, while the sum is 53.

The square root of 920975993 is about 30347.5862796368. The cubic root of 920975993 is about 972.9326321656.

The spelling of 920975993 in words is "nine hundred twenty million, nine hundred seventy-five thousand, nine hundred ninety-three".