830921357 has 8 divisors (see below), whose sum is σ = 999604800. Its totient is φ = 674733024.

The previous prime is 830921263. The next prime is 830921387. The reversal of 830921357 is 753129038.

830921357 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 not a de Polignac number, because 830921357 - 2⁸ = 830921101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 830921357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830921387) 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, 3123632 + ... + 3123897.

It is an arithmetic number, because the mean of its divisors is an integer number (124950600).

Almost surely, 2^830921357 is an apocalyptic number.

It is an amenable number.

830921357 is a deficient number, since it is larger than the sum of its proper divisors (168683443).

830921357 is a wasteful number, since it uses less digits than its factorization.

830921357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6247555.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 830921357 is about 28825.7065308034. The cubic root of 830921357 is about 940.1272488817.

The spelling of 830921357 in words is "eight hundred thirty million, nine hundred twenty-one thousand, three hundred fifty-seven".