11420789 has 2 divisors, whose sum is σ = 11420790. Its totient is φ = 11420788.

The previous prime is 11420713. The next prime is 11420791. The reversal of 11420789 is 98702411.

11420789 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., 11336689 + 84100 = 3367^2 + 290^2 .

It is an emirp because it is prime and its reverse (98702411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11420789 - 2⁸ = 11420533 is a prime.

It is a Sophie Germain prime.

Together with 11420791, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11420089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5710394 + 5710395.

It is an arithmetic number, because the mean of its divisors is an integer number (5710395).

Almost surely, 2^11420789 is an apocalyptic number.

It is an amenable number.

11420789 is a deficient number, since it is larger than the sum of its proper divisors (1).

11420789 is an equidigital number, since it uses as much as digits as its factorization.

11420789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 11420789 is about 3379.4657861857. The cubic root of 11420789 is about 225.1984356406.

The spelling of 11420789 in words is "eleven million, four hundred twenty thousand, seven hundred eighty-nine".