11989594 has 4 divisors (see below), whose sum is σ = 17984394. Its totient is φ = 5994796.

The previous prime is 11989553. The next prime is 11989597. The reversal of 11989594 is 49598911.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6528025 + 5461569 = 2555^2 + 2337^2 .

It is not an unprimeable number, because it can be changed into a prime (11989597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2997397 + ... + 2997400.

Almost surely, 2^11989594 is an apocalyptic number.

11989594 is a deficient number, since it is larger than the sum of its proper divisors (5994800).

11989594 is an equidigital number, since it uses as much as digits as its factorization.

11989594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5994799.

The product of its digits is 116640, while the sum is 46.

The square root of 11989594 is about 3462.5993126552. The cubic root of 11989594 is about 228.8766521703.

The spelling of 11989594 in words is "eleven million, nine hundred eighty-nine thousand, five hundred ninety-four".