11915983 has 8 divisors (see below), whose sum is σ = 12587120. Its totient is φ = 11249280.

The previous prime is 11915933. The next prime is 11915999. The reversal of 11915983 is 38951911.

It is a happy number.

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 11915983 - 2⁹ = 11915471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11915903) 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, 5473 + ... + 7333.

It is an arithmetic number, because the mean of its divisors is an integer number (1573390).

Almost surely, 2^11915983 is an apocalyptic number.

11915983 is a deficient number, since it is larger than the sum of its proper divisors (671137).

11915983 is a wasteful number, since it uses less digits than its factorization.

11915983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217.

The product of its digits is 9720, while the sum is 37.

The square root of 11915983 is about 3451.9535049012. The cubic root of 11915983 is about 228.4072885746.

The spelling of 11915983 in words is "eleven million, nine hundred fifteen thousand, nine hundred eighty-three".