9789297040 has 40 divisors (see below), whose sum is σ = 23958020160. Its totient is φ = 3709627776.

The previous prime is 9789297029. The next prime is 9789297041. The reversal of 9789297040 is 407929879.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (9789297041) 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, 3218644 + ... + 3221683.

It is an arithmetic number, because the mean of its divisors is an integer number (598950504).

Almost surely, 2^9789297040 is an apocalyptic number.

It is an amenable number.

9789297040 is an abundant number, since it is smaller than the sum of its proper divisors (14168723120).

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

9789297040 is a wasteful number, since it uses less digits than its factorization.

9789297040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6440359 (or 6440353 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 55.

The square root of 9789297040 is about 98940.8764869202. The cubic root of 9789297040 is about 2139.1956274699.

The spelling of 9789297040 in words is "nine billion, seven hundred eighty-nine million, two hundred ninety-seven thousand, forty".