11277947 has 2 divisors, whose sum is σ = 11277948. Its totient is φ = 11277946.

The previous prime is 11277943. The next prime is 11277949. The reversal of 11277947 is 74977211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11277947 - 2² = 11277943 is a prime.

Together with 11277949, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 11277947.

It is not a weakly prime, because it can be changed into another prime (11277943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5638973 + 5638974.

It is an arithmetic number, because the mean of its divisors is an integer number (5638974).

Almost surely, 2^11277947 is an apocalyptic number.

11277947 is a deficient number, since it is larger than the sum of its proper divisors (1).

11277947 is an equidigital number, since it uses as much as digits as its factorization.

11277947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24696, while the sum is 38.

The square root of 11277947 is about 3358.2654749141. The cubic root of 11277947 is about 224.2556273333.

The spelling of 11277947 in words is "eleven million, two hundred seventy-seven thousand, nine hundred forty-seven".