9722129808 has 40 divisors (see below), whose sum is σ = 26207483328. Its totient is φ = 3099809152.

The previous prime is 9722129803. The next prime is 9722129863. The reversal of 9722129808 is 8089212279.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (9722129803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4402035 + ... + 4404242.

Almost surely, 2^9722129808 is an apocalyptic number.

It is an amenable number.

9722129808 is an abundant number, since it is smaller than the sum of its proper divisors (16485353520).

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

9722129808 is a wasteful number, since it uses less digits than its factorization.

9722129808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8806311 (or 8806305 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 9722129808 is about 98600.8610915747. The cubic root of 9722129808 is about 2134.2918457923.

The spelling of 9722129808 in words is "nine billion, seven hundred twenty-two million, one hundred twenty-nine thousand, eight hundred eight".