921830957 has 8 divisors (see below), whose sum is σ = 937017696. Its totient is φ = 906686352.

The previous prime is 921830929. The next prime is 921830971. The reversal of 921830957 is 759038129.

921830957 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 921830957 - 2⁶ = 921830893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921830257) 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, 35198 + ... + 55520.

It is an arithmetic number, because the mean of its divisors is an integer number (117127212).

Almost surely, 2^921830957 is an apocalyptic number.

It is an amenable number.

921830957 is a deficient number, since it is larger than the sum of its proper divisors (15186739).

921830957 is a wasteful number, since it uses less digits than its factorization.

921830957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21067.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 921830957 is about 30361.6692064188. The cubic root of 921830957 is about 973.2336045810.

The spelling of 921830957 in words is "nine hundred twenty-one million, eight hundred thirty thousand, nine hundred fifty-seven".