29809557994969 has 9 divisors (see below), whose sum is σ = 30802350842229. Its totient is φ = 28847795555580.

The previous prime is 29809557994967. The next prime is 29809557994987. The reversal of 29809557994969 is 96949975590892.

The square root of 29809557994969 is 5459813.

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

It is not a de Polignac number, because 29809557994969 - 2¹ = 29809557994967 is a prime.

It is a super-2 number, since 2×29809557994969² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29809557994967) 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, 169166142 + ... + 169342264.

Almost surely, 2^{29809557994969} is an apocalyptic number.

29809557994969 is the 5459813-rd square number.

29809557994969 is the 2729907-th centered octagonal number.

It is an amenable number.

29809557994969 is a deficient number, since it is larger than the sum of its proper divisors (992792847260).

29809557994969 is an frugal number, since it uses more digits than its factorization.

29809557994969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352308 (or 176154 counting only the distinct ones).

The product of its (nonzero) digits is 35712835200, while the sum is 91.

The spelling of 29809557994969 in words is "twenty-nine trillion, eight hundred nine billion, five hundred fifty-seven million, nine hundred ninety-four thousand, nine hundred sixty-nine".