11989692 has 144 divisors (see below), whose sum is σ = 37975392. Its totient is φ = 3133440.

The previous prime is 11989687. The next prime is 11989697. The reversal of 11989692 is 29698911.

It is an interprime number because it is at equal distance from previous prime (11989687) and next prime (11989697).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11989697) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87448 + ... + 87584.

It is an arithmetic number, because the mean of its divisors is an integer number (263718).

Almost surely, 2^11989692 is an apocalyptic number.

11989692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11989692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18987696).

11989692 is an abundant number, since it is smaller than the sum of its proper divisors (25985700).

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

11989692 is a wasteful number, since it uses less digits than its factorization.

11989692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 183 counting only the distinct ones).

The product of its digits is 69984, while the sum is 45.

The square root of 11989692 is about 3462.6134638449. The cubic root of 11989692 is about 228.8772757625.

The spelling of 11989692 in words is "eleven million, nine hundred eighty-nine thousand, six hundred ninety-two".