9769748940 has 144 divisors (see below), whose sum is σ = 34249400640. Its totient is φ = 2207969280.

The previous prime is 9769748927. The next prime is 9769748941. The reversal of 9769748940 is 498479679.

9769748940 is a `hidden beast` number, since 97 + 69 + 7 + 489 + 4 + 0 = 666.

It is a super-2 number, since 2×9769748940² (a number of 21 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (9769748941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68580 + ... + 155700.

It is an arithmetic number, because the mean of its divisors is an integer number (237843060).

Almost surely, 2^9769748940 is an apocalyptic number.

9769748940 is a gapful number since it is divisible by the number (90) 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 9769748940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17124700320).

9769748940 is an abundant number, since it is smaller than the sum of its proper divisors (24479651700).

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

9769748940 is a wasteful number, since it uses less digits than its factorization.

9769748940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87232 (or 87227 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 63.

The square root of 9769748940 is about 98842.0403472126. The cubic root of 9769748940 is about 2137.7707694331.

The spelling of 9769748940 in words is "nine billion, seven hundred sixty-nine million, seven hundred forty-eight thousand, nine hundred forty".