11816977 has 2 divisors, whose sum is σ = 11816978. Its totient is φ = 11816976.

The previous prime is 11816951. The next prime is 11816999. The reversal of 11816977 is 77961811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11498881 + 318096 = 3391^2 + 564^2 .

It is an emirp because it is prime and its reverse (77961811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11816977 - 2¹⁵ = 11784209 is a prime.

It is not a weakly prime, because it can be changed into another prime (11816927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5908488 + 5908489.

It is an arithmetic number, because the mean of its divisors is an integer number (5908489).

Almost surely, 2^11816977 is an apocalyptic number.

It is an amenable number.

11816977 is a deficient number, since it is larger than the sum of its proper divisors (1).

11816977 is an equidigital number, since it uses as much as digits as its factorization.

11816977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 40.

The square root of 11816977 is about 3437.5830171794. The cubic root of 11816977 is about 227.7729413387.

The spelling of 11816977 in words is "eleven million, eight hundred sixteen thousand, nine hundred seventy-seven".