11347989 has 16 divisors (see below), whose sum is σ = 15552000. Its totient is φ = 7357376.

The previous prime is 11347981. The next prime is 11348003. The reversal of 11347989 is 98974311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11347989 - 2³ = 11347981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11347989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11347981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23452 + ... + 23930.

It is an arithmetic number, because the mean of its divisors is an integer number (972000).

Almost surely, 2^11347989 is an apocalyptic number.

It is an amenable number.

11347989 is a deficient number, since it is larger than the sum of its proper divisors (4204011).

11347989 is a wasteful number, since it uses less digits than its factorization.

11347989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684.

The product of its digits is 54432, while the sum is 42.

The square root of 11347989 is about 3368.6776337311. The cubic root of 11347989 is about 224.7189181397.

The spelling of 11347989 in words is "eleven million, three hundred forty-seven thousand, nine hundred eighty-nine".