11927813 has 8 divisors (see below), whose sum is σ = 12266496. Its totient is φ = 11592000.

The previous prime is 11927803. The next prime is 11927819. The reversal of 11927813 is 31872911.

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 11927813 - 2⁶ = 11927749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11927813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11927819) 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, 9788 + ... + 10938.

It is an arithmetic number, because the mean of its divisors is an integer number (1533312).

Almost surely, 2^11927813 is an apocalyptic number.

It is an amenable number.

11927813 is a deficient number, since it is larger than the sum of its proper divisors (338683).

11927813 is a wasteful number, since it uses less digits than its factorization.

11927813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435.

The product of its digits is 3024, while the sum is 32.

The square root of 11927813 is about 3453.6666023228. Note that the first 4 decimals coincide. The cubic root of 11927813 is about 228.4828499594.

The spelling of 11927813 in words is "eleven million, nine hundred twenty-seven thousand, eight hundred thirteen".