11893909 has 8 divisors (see below), whose sum is σ = 12258648. Its totient is φ = 11531520.

The previous prime is 11893879. The next prime is 11893913. The reversal of 11893909 is 90939811.

It can be written as a sum of positive squares in 4 ways, for example, as 483025 + 11410884 = 695^2 + 3378^2 .

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 11893909 - 2⁵ = 11893877 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 (11893939) 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, 18969 + ... + 19585.

It is an arithmetic number, because the mean of its divisors is an integer number (1532331).

Almost surely, 2^11893909 is an apocalyptic number.

It is an amenable number.

11893909 is a deficient number, since it is larger than the sum of its proper divisors (364739).

11893909 is an equidigital number, since it uses as much as digits as its factorization.

11893909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 11893909 is about 3448.7547027877. The cubic root of 11893909 is about 228.2661621846.

The spelling of 11893909 in words is "eleven million, eight hundred ninety-three thousand, nine hundred nine".