11989494 has 48 divisors (see below), whose sum is σ = 29839680. Its totient is φ = 3440880.

The previous prime is 11989493. The next prime is 11989511. The reversal of 11989494 is 49498911.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11989493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2169 + ... + 5355.

It is an arithmetic number, because the mean of its divisors is an integer number (621660).

Almost surely, 2^11989494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11989494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14919840).

11989494 is an abundant number, since it is smaller than the sum of its proper divisors (17850186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11989494 is a wasteful number, since it uses less digits than its factorization.

11989494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225 (or 3222 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 11989494 is about 3462.5848726060. The cubic root of 11989494 is about 228.8760158482.

The spelling of 11989494 in words is "eleven million, nine hundred eighty-nine thousand, four hundred ninety-four".