11520869 has 2 divisors, whose sum is σ = 11520870. Its totient is φ = 11520868.

The previous prime is 11520863. The next prime is 11520881. The reversal of 11520869 is 96802511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9796900 + 1723969 = 3130^2 + 1313^2 .

It is a cyclic number.

It is not a de Polignac number, because 11520869 - 2⁴ = 11520853 is a prime.

It is a super-2 number, since 2×11520869² = 265460845030322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11520863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5760434 + 5760435.

It is an arithmetic number, because the mean of its divisors is an integer number (5760435).

Almost surely, 2^11520869 is an apocalyptic number.

It is an amenable number.

11520869 is a deficient number, since it is larger than the sum of its proper divisors (1).

11520869 is an equidigital number, since it uses as much as digits as its factorization.

11520869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 11520869 is about 3394.2405630715. The cubic root of 11520869 is about 225.8543256797.

The spelling of 11520869 in words is "eleven million, five hundred twenty thousand, eight hundred sixty-nine".