11989774 has 4 divisors (see below), whose sum is σ = 17984664. Its totient is φ = 5994886.

The previous prime is 11989763. The next prime is 11989781. The reversal of 11989774 is 47798911.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2997442 + ... + 2997445.

It is an arithmetic number, because the mean of its divisors is an integer number (4496166).

Almost surely, 2^11989774 is an apocalyptic number.

11989774 is a deficient number, since it is larger than the sum of its proper divisors (5994890).

11989774 is an equidigital number, since it uses as much as digits as its factorization.

11989774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5994889.

The product of its digits is 127008, while the sum is 46.

The square root of 11989774 is about 3462.6253045919. The cubic root of 11989774 is about 228.8777975411.

The spelling of 11989774 in words is "eleven million, nine hundred eighty-nine thousand, seven hundred seventy-four".