3912921169 has 4 divisors (see below), whose sum is σ = 3934539700. Its totient is φ = 3891302640.

The previous prime is 3912921163. The next prime is 3912921211. The reversal of 3912921169 is 9611292193.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1360650769 + 2552270400 = 36887^2 + 50520^2 .

It is a cyclic number.

It is not a de Polignac number, because 3912921169 - 2¹³ = 3912912977 is a prime.

It is a super-2 number, since 2×3912921169² = 30621904149616653122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3912921163) 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, 10808994 + ... + 10809355.

It is an arithmetic number, because the mean of its divisors is an integer number (983634925).

Almost surely, 2^3912921169 is an apocalyptic number.

It is an amenable number.

3912921169 is a deficient number, since it is larger than the sum of its proper divisors (21618531).

3912921169 is a wasteful number, since it uses less digits than its factorization.

3912921169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21618530.

The product of its digits is 52488, while the sum is 43.

The square root of 3912921169 is about 62553.3465851348. The cubic root of 3912921169 is about 1575.7973514045.

The spelling of 3912921169 in words is "three billion, nine hundred twelve million, nine hundred twenty-one thousand, one hundred sixty-nine".