11872649 has 2 divisors, whose sum is σ = 11872650. Its totient is φ = 11872648.

The previous prime is 11872643. The next prime is 11872667. The reversal of 11872649 is 94627811.

11872649 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11868025 + 4624 = 3445^2 + 68^2 .

It is an emirp because it is prime and its reverse (94627811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11872649 is a prime.

It is not a weakly prime, because it can be changed into another prime (11872643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5936324 + 5936325.

It is an arithmetic number, because the mean of its divisors is an integer number (5936325).

Almost surely, 2^11872649 is an apocalyptic number.

It is an amenable number.

11872649 is a deficient number, since it is larger than the sum of its proper divisors (1).

11872649 is an equidigital number, since it uses as much as digits as its factorization.

11872649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 11872649 is about 3445.6710522045. The cubic root of 11872649 is about 228.1300747980.

It can be divided in two parts, 11872 and 649, that added together give a palindrome (12521).

The spelling of 11872649 in words is "eleven million, eight hundred seventy-two thousand, six hundred forty-nine".