11989251 has 12 divisors (see below), whose sum is σ = 17451720. Its totient is φ = 7931040.

The previous prime is 11989193. The next prime is 11989253. The reversal of 11989251 is 15298911.

11989251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11989251 - 2¹¹ = 11987203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11989253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3906 + ... + 6263.

It is an arithmetic number, because the mean of its divisors is an integer number (1454310).

Almost surely, 2^11989251 is an apocalyptic number.

11989251 is a deficient number, since it is larger than the sum of its proper divisors (5462469).

11989251 is a wasteful number, since it uses less digits than its factorization.

11989251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10306 (or 10303 counting only the distinct ones).

The product of its digits is 6480, while the sum is 36.

The square root of 11989251 is about 3462.5497830356. The cubic root of 11989251 is about 228.8744695709.

It can be divided in two parts, 1198925 and 1, that added together give a triangular number (1198926 = T₁₅₄₈).

The spelling of 11989251 in words is "eleven million, nine hundred eighty-nine thousand, two hundred fifty-one".