9640279572 has 144 divisors (see below), whose sum is σ = 28577082240. Its totient is φ = 2475601920.

The previous prime is 9640279567. The next prime is 9640279577. The reversal of 9640279572 is 2759720469.

It is an interprime number because it is at equal distance from previous prime (9640279567) and next prime (9640279577).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9640279577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 899268 + ... + 909924.

It is an arithmetic number, because the mean of its divisors is an integer number (198451960).

Almost surely, 2^9640279572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9640279572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14288541120).

9640279572 is an abundant number, since it is smaller than the sum of its proper divisors (18936802668).

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

9640279572 is a wasteful number, since it uses less digits than its factorization.

9640279572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10782 (or 10769 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 51.

The square root of 9640279572 is about 98184.9253806306. The cubic root of 9640279572 is about 2128.2854513363.

The spelling of 9640279572 in words is "nine billion, six hundred forty million, two hundred seventy-nine thousand, five hundred seventy-two".