11948913 has 12 divisors (see below), whose sum is σ = 17308980. Its totient is φ = 7943136.

The previous prime is 11948843. The next prime is 11948941. The reversal of 11948913 is 31984911.

It can be written as a sum of positive squares in 2 ways, for example, as 7551504 + 4397409 = 2748^2 + 2097^2 .

It is not a de Polignac number, because 11948913 - 2²² = 7754609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11948953) 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 11 ways as a sum of consecutive naturals, for example, 1795 + ... + 5207.

It is an arithmetic number, because the mean of its divisors is an integer number (1442415).

Almost surely, 2^11948913 is an apocalyptic number.

It is an amenable number.

11948913 is a deficient number, since it is larger than the sum of its proper divisors (5360067).

11948913 is a wasteful number, since it uses less digits than its factorization.

11948913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3808 (or 3805 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 11948913 is about 3456.7199770881. The cubic root of 11948913 is about 228.6174973920.

The spelling of 11948913 in words is "eleven million, nine hundred forty-eight thousand, nine hundred thirteen".