11389771 has 2 divisors, whose sum is σ = 11389772. Its totient is φ = 11389770.

The previous prime is 11389723. The next prime is 11389831. The reversal of 11389771 is 17798311.

It is a weak prime.

It is an emirp because it is prime and its reverse (17798311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11389771 is a prime.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 11389771.

It is not a weakly prime, because it can be changed into another prime (11389471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5694885 + 5694886.

It is an arithmetic number, because the mean of its divisors is an integer number (5694886).

Almost surely, 2^11389771 is an apocalyptic number.

11389771 is a deficient number, since it is larger than the sum of its proper divisors (1).

11389771 is an equidigital number, since it uses as much as digits as its factorization.

11389771 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 11389771 is about 3374.8734791100. The cubic root of 11389771 is about 224.9943768142.

The spelling of 11389771 in words is "eleven million, three hundred eighty-nine thousand, seven hundred seventy-one".