833914149721 has 9 divisors (see below), whose sum is σ = 885869930749. Its totient is φ = 784845765184.

The previous prime is 833914149701. The next prime is 833914149751. The reversal of 833914149721 is 127941419338.

The square root of 833914149721 is 913189.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 69373765321 + 764540384400 = 263389^2 + 874380^2 .

It is not a de Polignac number, because 833914149721 - 2²⁹ = 833377278809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (833914149701) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15497355 + ... + 15551071.

Almost surely, 2^833914149721 is an apocalyptic number.

833914149721 is the 913189-th square number.

833914149721 is the 456595-th centered octagonal number.

It is an amenable number.

833914149721 is a deficient number, since it is larger than the sum of its proper divisors (51955781028).

833914149721 is an frugal number, since it uses more digits than its factorization.

833914149721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107468 (or 53734 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The spelling of 833914149721 in words is "eight hundred thirty-three billion, nine hundred fourteen million, one hundred forty-nine thousand, seven hundred twenty-one".