13923622084969 has 9 divisors (see below), whose sum is σ = 14005219993093. Its totient is φ = 13842496913152.

The previous prime is 13923622084921. The next prime is 13923622085083. The reversal of 13923622084969 is 96948022632931.

The square root of 13923622084969 is 3731437.

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 276597105625 + 13647024979344 = 525925^2 + 3694188^2 .

It is not a de Polignac number, because 13923622084969 - 2³³ = 13915032150377 is a prime.

It is a super-2 number, since 2×13923622084969² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13923622084969.

It is not an unprimeable number, because it can be changed into a prime (13923622084919) 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, 645527817 + ... + 645549385.

Almost surely, 2^{13923622084969} is an apocalyptic number.

13923622084969 is the 3731437-th square number.

13923622084969 is the 1865719-th centered octagonal number.

It is an amenable number.

13923622084969 is a deficient number, since it is larger than the sum of its proper divisors (81597908124).

13923622084969 is an frugal number, since it uses more digits than its factorization.

13923622084969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43484 (or 21742 counting only the distinct ones).

The product of its (nonzero) digits is 60466176, while the sum is 64.

Multiplying 13923622084969 by its sum of digits (64), we get a square (891111813438016 = 29851496²).

The spelling of 13923622084969 in words is "thirteen trillion, nine hundred twenty-three billion, six hundred twenty-two million, eighty-four thousand, nine hundred sixty-nine".