9770707440 has 240 divisors, whose sum is σ = 37197931680. Its totient is φ = 2278471680.

The previous prime is 9770707369. The next prime is 9770707489. The reversal of 9770707440 is 447070779.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 150370 + ... + 205310.

It is an arithmetic number, because the mean of its divisors is an integer number (154991382).

Almost surely, 2^9770707440 is an apocalyptic number.

9770707440 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 9770707440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18598965840).

9770707440 is an abundant number, since it is smaller than the sum of its proper divisors (27427224240).

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

9770707440 is a wasteful number, since it uses less digits than its factorization.

9770707440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54992 (or 54983 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 45.

The square root of 9770707440 is about 98846.8888736515. Note that the first 4 decimals coincide. The cubic root of 9770707440 is about 2137.8406786426.

The spelling of 9770707440 in words is "nine billion, seven hundred seventy million, seven hundred seven thousand, four hundred forty".