3122909689 has 27 divisors (see below), whose sum is σ = 3387154381. Its totient is φ = 2879092160.

The previous prime is 3122909687. The next prime is 3122909693. The reversal of 3122909689 is 9869092213.

The square root of 3122909689 is 55883.

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 824666089 + 2298243600 = 28717^2 + 47940^2 .

It is not a de Polignac number, because 3122909689 - 2¹ = 3122909687 is a prime.

It is a super-4 number, since 4×3122909689⁴ (a number of 39 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3122909681) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 66444864 + ... + 66444910.

Almost surely, 2^3122909689 is an apocalyptic number.

3122909689 is the 55883-rd square number.

3122909689 is the 27942-nd centered octagonal number.

It is an amenable number.

3122909689 is a deficient number, since it is larger than the sum of its proper divisors (264244692).

3122909689 is an frugal number, since it uses more digits than its factorization.

3122909689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 49.

The cubic root of 3122909689 is about 1461.6828173867.

Multiplying 3122909689 by its sum of digits (49), we get a square (153022574761 = 391181²).

The spelling of 3122909689 in words is "three billion, one hundred twenty-two million, nine hundred nine thousand, six hundred eighty-nine".