830169521 has 4 divisors (see below), whose sum is σ = 866263872. Its totient is φ = 794075172.

The previous prime is 830169469. The next prime is 830169523. The reversal of 830169521 is 125961038.

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 a de Polignac number, because none of the positive numbers 2^k-830169521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (830169523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18047141 + ... + 18047186.

It is an arithmetic number, because the mean of its divisors is an integer number (216565968).

Almost surely, 2^830169521 is an apocalyptic number.

It is an amenable number.

830169521 is a deficient number, since it is larger than the sum of its proper divisors (36094351).

830169521 is a wasteful number, since it uses less digits than its factorization.

830169521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36094350.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 830169521 is about 28812.6625114723. The cubic root of 830169521 is about 939.8436140170.

The spelling of 830169521 in words is "eight hundred thirty million, one hundred sixty-nine thousand, five hundred twenty-one".