830532921 has 32 divisors (see below), whose sum is σ = 1219630080. Its totient is φ = 500385600.

The previous prime is 830532907. The next prime is 830532961. The reversal of 830532921 is 129235038.

It is not a de Polignac number, because 830532921 - 2⁵ = 830532889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (830532961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 708666 + ... + 709836.

It is an arithmetic number, because the mean of its divisors is an integer number (38113440).

Almost surely, 2^830532921 is an apocalyptic number.

It is an amenable number.

830532921 is a deficient number, since it is larger than the sum of its proper divisors (389097159).

830532921 is a wasteful number, since it uses less digits than its factorization.

830532921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 830532921 is about 28818.9680765984. The cubic root of 830532921 is about 939.9807303278.

Adding to 830532921 its reverse (129235038), we get a palindrome (959767959).

The spelling of 830532921 in words is "eight hundred thirty million, five hundred thirty-two thousand, nine hundred twenty-one".