9477659772 has 144 divisors (see below), whose sum is σ = 29826558720. Its totient is φ = 2590134624.

The previous prime is 9477659767. The next prime is 9477659797. The reversal of 9477659772 is 2779567749.

9477659772 is a `hidden beast` number, since 9 + 477 + 6 + 5 + 97 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82783 + ... + 160649.

It is an arithmetic number, because the mean of its divisors is an integer number (207128880).

Almost surely, 2^9477659772 is an apocalyptic number.

9477659772 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9477659772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14913279360).

9477659772 is an abundant number, since it is smaller than the sum of its proper divisors (20348898948).

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

9477659772 is a wasteful number, since it uses less digits than its factorization.

9477659772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77917 (or 77902 counting only the distinct ones).

The product of its digits is 46675440, while the sum is 63.

The square root of 9477659772 is about 97353.2730420503. The cubic root of 9477659772 is about 2116.2503265394.

The spelling of 9477659772 in words is "nine billion, four hundred seventy-seven million, six hundred fifty-nine thousand, seven hundred seventy-two".