11413989 has 6 divisors (see below), whose sum is σ = 16486886. Its totient is φ = 7609320.

The previous prime is 11413981. The next prime is 11413991. The reversal of 11413989 is 98931411.

It can be written as a sum of positive squares in only one way, i.e., 11168964 + 245025 = 3342^2 + 495^2 .

It is not a de Polignac number, because 11413989 - 2³ = 11413981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11413981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 634102 + ... + 634119.

Almost surely, 2^11413989 is an apocalyptic number.

It is an amenable number.

11413989 is a deficient number, since it is larger than the sum of its proper divisors (5072897).

11413989 is a wasteful number, since it uses less digits than its factorization.

11413989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268227 (or 1268224 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 11413989 is about 3378.4595602138. The cubic root of 11413989 is about 225.1537319752.

The spelling of 11413989 in words is "eleven million, four hundred thirteen thousand, nine hundred eighty-nine".