9409720844 has 24 divisors (see below), whose sum is σ = 16571646000. Its totient is φ = 4675048704.

The previous prime is 9409720843. The next prime is 9409720883. The reversal of 9409720844 is 4480279049.

It is not an unprimeable number, because it can be changed into a prime (9409720843) 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, 454952 + ... + 475184.

It is an arithmetic number, because the mean of its divisors is an integer number (690485250).

Almost surely, 2^9409720844 is an apocalyptic number.

It is an amenable number.

9409720844 is a deficient number, since it is larger than the sum of its proper divisors (7161925156).

9409720844 is a wasteful number, since it uses less digits than its factorization.

9409720844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20969 (or 20967 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 9409720844 is about 97003.7156195576. The cubic root of 9409720844 is about 2111.1815402046.

The spelling of 9409720844 in words is "nine billion, four hundred nine million, seven hundred twenty thousand, eight hundred forty-four".