832145217 has 4 divisors (see below), whose sum is σ = 1109526960. Its totient is φ = 554763476.

The previous prime is 832145191. The next prime is 832145219. The reversal of 832145217 is 712541238.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 832145217 - 2⁷ = 832145089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (832145219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138690867 + ... + 138690872.

It is an arithmetic number, because the mean of its divisors is an integer number (277381740).

Almost surely, 2^832145217 is an apocalyptic number.

It is an amenable number.

832145217 is a deficient number, since it is larger than the sum of its proper divisors (277381743).

832145217 is a wasteful number, since it uses less digits than its factorization.

832145217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277381742.

The product of its digits is 13440, while the sum is 33.

The square root of 832145217 is about 28846.9273407065. The cubic root of 832145217 is about 940.5885920603.

The spelling of 832145217 in words is "eight hundred thirty-two million, one hundred forty-five thousand, two hundred seventeen".