9913261 has 8 divisors (see below), whose sum is σ = 10541880. Its totient is φ = 9289728.

The previous prime is 9913219. The next prime is 9913283. The reversal of 9913261 is 1623199.

It can be written as a sum of positive squares in 4 ways, for example, as 2996361 + 6916900 = 1731^2 + 2630^2 .

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

It is a 7-Lehmer number, since φ(9913261) divides (9913261-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 9913261 - 2⁷ = 9913133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9913201) 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, 3235 + ... + 5503.

It is an arithmetic number, because the mean of its divisors is an integer number (1317735).

Almost surely, 2^9913261 is an apocalyptic number.

It is an amenable number.

9913261 is a deficient number, since it is larger than the sum of its proper divisors (628619).

9913261 is a wasteful number, since it uses less digits than its factorization.

9913261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543.

The product of its digits is 2916, while the sum is 31.

The square root of 9913261 is about 3148.5331505322. The cubic root of 9913261 is about 214.8187475473.

The spelling of 9913261 in words is "nine million, nine hundred thirteen thousand, two hundred sixty-one".