9969723534 has 32 divisors (see below), whose sum is σ = 20149762176. Its totient is φ = 3288231200.

The previous prime is 9969723521. The next prime is 9969723553. The reversal of 9969723534 is 4353279699.

It is a happy number.

9969723534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1151329 + ... + 1159955.

It is an arithmetic number, because the mean of its divisors is an integer number (629680068).

Almost surely, 2^9969723534 is an apocalyptic number.

9969723534 is an abundant number, since it is smaller than the sum of its proper divisors (10180038642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9969723534 is a wasteful number, since it uses less digits than its factorization.

9969723534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10640.

The product of its digits is 11022480, while the sum is 57.

The square root of 9969723534 is about 99848.5029131634. The cubic root of 9969723534 is about 2152.2582030526.

The spelling of 9969723534 in words is "nine billion, nine hundred sixty-nine million, seven hundred twenty-three thousand, five hundred thirty-four".