11738909 has 12 divisors (see below), whose sum is σ = 14528736. Its totient is φ = 9286992.

The previous prime is 11738899. The next prime is 11738929. The reversal of 11738909 is 90983711.

11738909 = 175² + 176² + ... + 343².

11738909 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-11738909 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11738929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3779 + ... + 6144.

It is an arithmetic number, because the mean of its divisors is an integer number (1210728).

Almost surely, 2^11738909 is an apocalyptic number.

It is an amenable number.

11738909 is a deficient number, since it is larger than the sum of its proper divisors (2789827).

11738909 is an equidigital number, since it uses as much as digits as its factorization.

11738909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9956 (or 9943 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 11738909 is about 3426.2091296358. The cubic root of 11738909 is about 227.2702442347.

The spelling of 11738909 in words is "eleven million, seven hundred thirty-eight thousand, nine hundred nine".