11389897 has 2 divisors, whose sum is σ = 11389898. Its totient is φ = 11389896.

The previous prime is 11389877. The next prime is 11389907. The reversal of 11389897 is 79898311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10732176 + 657721 = 3276^2 + 811^2 .

It is a cyclic number.

It is not a de Polignac number, because 11389897 - 2¹⁹ = 10865609 is a prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (11389867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5694948 + 5694949.

It is an arithmetic number, because the mean of its divisors is an integer number (5694949).

Almost surely, 2^11389897 is an apocalyptic number.

It is an amenable number.

11389897 is a deficient number, since it is larger than the sum of its proper divisors (1).

11389897 is an equidigital number, since it uses as much as digits as its factorization.

11389897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 46.

The square root of 11389897 is about 3374.8921464248. The cubic root of 11389897 is about 224.9952064822.

The spelling of 11389897 in words is "eleven million, three hundred eighty-nine thousand, eight hundred ninety-seven".