10919869 has 2 divisors, whose sum is σ = 10919870. Its totient is φ = 10919868.

The previous prime is 10919849. The next prime is 10919879. The reversal of 10919869 is 96891901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5583769 + 5336100 = 2363^2 + 2310^2 .

It is an emirp because it is prime and its reverse (96891901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10919869 - 2⁵ = 10919837 is a prime.

It is a super-2 number, since 2×10919869² = 238487077954322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10919809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5459934 + 5459935.

It is an arithmetic number, because the mean of its divisors is an integer number (5459935).

Almost surely, 2^10919869 is an apocalyptic number.

It is an amenable number.

10919869 is a deficient number, since it is larger than the sum of its proper divisors (1).

10919869 is an equidigital number, since it uses as much as digits as its factorization.

10919869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 43.

The square root of 10919869 is about 3304.5225071105. The cubic root of 10919869 is about 221.8566628765.

The spelling of 10919869 in words is "ten million, nine hundred nineteen thousand, eight hundred sixty-nine".