11948309 has 8 divisors (see below), whose sum is σ = 12135552. Its totient is φ = 11762640.

The previous prime is 11948303. The next prime is 11948317. The reversal of 11948309 is 90384911.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11948309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11948303) 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, 31847 + ... + 32219.

It is an arithmetic number, because the mean of its divisors is an integer number (1516944).

Almost surely, 2^11948309 is an apocalyptic number.

It is an amenable number.

11948309 is a deficient number, since it is larger than the sum of its proper divisors (187243).

11948309 is a wasteful number, since it uses less digits than its factorization.

11948309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 11948309 is about 3456.6326099254. The cubic root of 11948309 is about 228.6136452342.

The spelling of 11948309 in words is "eleven million, nine hundred forty-eight thousand, three hundred nine".