11855977 has 4 divisors (see below), whose sum is σ = 13549696. Its totient is φ = 10162260.

The previous prime is 11855959. The next prime is 11855989. The reversal of 11855977 is 77955811.

11855977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11855977 - 2¹⁵ = 11823209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11855177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846849 + ... + 846862.

It is an arithmetic number, because the mean of its divisors is an integer number (3387424).

Almost surely, 2^11855977 is an apocalyptic number.

It is an amenable number.

11855977 is a deficient number, since it is larger than the sum of its proper divisors (1693719).

11855977 is an equidigital number, since it uses as much as digits as its factorization.

11855977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693718.

The product of its digits is 88200, while the sum is 43.

The square root of 11855977 is about 3443.2509347998. The cubic root of 11855977 is about 228.0232419623.

The spelling of 11855977 in words is "eleven million, eight hundred fifty-five thousand, nine hundred seventy-seven".