11576989 has 2 divisors, whose sum is σ = 11576990. Its totient is φ = 11576988.

The previous prime is 11576959. The next prime is 11577001. The reversal of 11576989 is 98967511.

It is a happy number.

11576989 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., 9424900 + 2152089 = 3070^2 + 1467^2 .

It is an emirp because it is prime and its reverse (98967511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11576989 - 2⁷ = 11576861 is a prime.

It is a super-2 number, since 2×11576989² = 268053348612242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11576959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5788494 + 5788495.

It is an arithmetic number, because the mean of its divisors is an integer number (5788495).

Almost surely, 2^11576989 is an apocalyptic number.

It is an amenable number.

11576989 is a deficient number, since it is larger than the sum of its proper divisors (1).

11576989 is an equidigital number, since it uses as much as digits as its factorization.

11576989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 46.

The square root of 11576989 is about 3402.4974650982. The cubic root of 11576989 is about 226.2204560387.

The spelling of 11576989 in words is "eleven million, five hundred seventy-six thousand, nine hundred eighty-nine".