11877779 has 2 divisors, whose sum is σ = 11877780. Its totient is φ = 11877778.

The previous prime is 11877773. The next prime is 11877797. The reversal of 11877779 is 97777811.

Together with next prime (11877797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (97777811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11877779 is a prime.

It is not a weakly prime, because it can be changed into another prime (11877773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5938889 + 5938890.

It is an arithmetic number, because the mean of its divisors is an integer number (5938890).

Almost surely, 2^11877779 is an apocalyptic number.

11877779 is a deficient number, since it is larger than the sum of its proper divisors (1).

11877779 is an equidigital number, since it uses as much as digits as its factorization.

11877779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172872, while the sum is 47.

The square root of 11877779 is about 3446.4153841347. The cubic root of 11877779 is about 228.1629273025.

It can be divided in two parts, 11 and 877779, that multiplied together give a palindrome (9655569).

The spelling of 11877779 in words is "eleven million, eight hundred seventy-seven thousand, seven hundred seventy-nine".