9613909 has 8 divisors (see below), whose sum is σ = 9773720. Its totient is φ = 9455616.

The previous prime is 9613907. The next prime is 9613939. The reversal of 9613909 is 9093169.

It can be written as a sum of positive squares in 4 ways, for example, as 2739025 + 6874884 = 1655^2 + 2622^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 9613909 - 2¹ = 9613907 is a prime.

It is a Duffinian number.

9613909 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9613907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20809 + ... + 21265.

It is an arithmetic number, because the mean of its divisors is an integer number (1221715).

Almost surely, 2^9613909 is an apocalyptic number.

It is an amenable number.

9613909 is a deficient number, since it is larger than the sum of its proper divisors (159811).

9613909 is a wasteful number, since it uses less digits than its factorization.

9613909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 9613909 is about 3100.6304197695. The cubic root of 9613909 is about 212.6343067914.

The spelling of 9613909 in words is "nine million, six hundred thirteen thousand, nine hundred nine".