11309869 has 2 divisors, whose sum is σ = 11309870. Its totient is φ = 11309868.

The previous prime is 11309863. The next prime is 11309873. The reversal of 11309869 is 96890311.

11309869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11309769 + 100 = 3363^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 11309869 - 2¹⁹ = 10785581 is a prime.

It is a super-2 number, since 2×11309869² = 255826273594322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11309863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5654934 + 5654935.

It is an arithmetic number, because the mean of its divisors is an integer number (5654935).

Almost surely, 2^11309869 is an apocalyptic number.

It is an amenable number.

11309869 is a deficient number, since it is larger than the sum of its proper divisors (1).

11309869 is an equidigital number, since it uses as much as digits as its factorization.

11309869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 11309869 is about 3363.0148676448. The cubic root of 11309869 is about 224.4670116855.

The spelling of 11309869 in words is "eleven million, three hundred nine thousand, eight hundred sixty-nine".