2117921469 has 32 divisors (see below), whose sum is σ = 3008839680. Its totient is φ = 1321391232.

The previous prime is 2117921467. The next prime is 2117921537. The reversal of 2117921469 is 9641297112.

It is not a de Polignac number, because 2117921469 - 2¹ = 2117921467 is a prime.

It is a super-2 number, since 2×2117921469² = 8971182697702235922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2117921469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117921467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2221897 + ... + 2222849.

It is an arithmetic number, because the mean of its divisors is an integer number (94026240).

Almost surely, 2^2117921469 is an apocalyptic number.

It is an amenable number.

2117921469 is a deficient number, since it is larger than the sum of its proper divisors (890918211).

2117921469 is a wasteful number, since it uses less digits than its factorization.

2117921469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409.

The product of its digits is 54432, while the sum is 42.

The square root of 2117921469 is about 46020.8807933964. The cubic root of 2117921469 is about 1284.2116860397.

The spelling of 2117921469 in words is "two billion, one hundred seventeen million, nine hundred twenty-one thousand, four hundred sixty-nine".