7129606969 has 3 divisors (see below), whose sum is σ = 7129691407. Its totient is φ = 7129522532.

The previous prime is 7129606963. The next prime is 7129607039. The reversal of 7129606969 is 9696069217.

The square root of 7129606969 is 84437.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 5400045225 + 1729561744 = 73485^2 + 41588^2 .

It is not a de Polignac number, because 7129606969 - 2⁵ = 7129606937 is a prime.

It is a super-2 number, since 2×7129606969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7129606963) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 42219 + ... + 126655.

Almost surely, 2^7129606969 is an apocalyptic number.

7129606969 is the 84437-th square number.

7129606969 is the 42219-th centered octagonal number.

It is an amenable number.

7129606969 is a deficient number, since it is larger than the sum of its proper divisors (84438).

7129606969 is an frugal number, since it uses more digits than its factorization.

7129606969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168874 (or 84437 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 55.

The cubic root of 7129606969 is about 1924.6652113796.

The spelling of 7129606969 in words is "seven billion, one hundred twenty-nine million, six hundred six thousand, nine hundred sixty-nine".