9777913 has 8 divisors (see below), whose sum is σ = 10447520. Its totient is φ = 9123840.

The previous prime is 9777883. The next prime is 9777919. The reversal of 9777913 is 3197779.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9777913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9777913.

It is not an unprimeable number, because it can be changed into a prime (9777919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2568 + ... + 5113.

It is an arithmetic number, because the mean of its divisors is an integer number (1305940).

Almost surely, 2^9777913 is an apocalyptic number.

It is an amenable number.

9777913 is a deficient number, since it is larger than the sum of its proper divisors (669607).

9777913 is a wasteful number, since it uses less digits than its factorization.

9777913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7767.

The product of its digits is 83349, while the sum is 43.

The square root of 9777913 is about 3126.9654619135. The cubic root of 9777913 is about 213.8366077450.

The spelling of 9777913 in words is "nine million, seven hundred seventy-seven thousand, nine hundred thirteen".