11398771 has 2 divisors, whose sum is σ = 11398772. Its totient is φ = 11398770.

The previous prime is 11398757. The next prime is 11398781. The reversal of 11398771 is 17789311.

It is a strong prime.

It is an emirp because it is prime and its reverse (17789311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11398771 - 2⁹ = 11398259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11398771.

It is not a weakly prime, because it can be changed into another prime (11398781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5699385 + 5699386.

It is an arithmetic number, because the mean of its divisors is an integer number (5699386).

Almost surely, 2^11398771 is an apocalyptic number.

11398771 is a deficient number, since it is larger than the sum of its proper divisors (1).

11398771 is an equidigital number, since it uses as much as digits as its factorization.

11398771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 37.

The square root of 11398771 is about 3376.2065991287. The cubic root of 11398771 is about 225.0536234331.

The spelling of 11398771 in words is "eleven million, three hundred ninety-eight thousand, seven hundred seventy-one".