11989963 has 8 divisors (see below), whose sum is σ = 12804480. Its totient is φ = 11202240.

The previous prime is 11989951. The next prime is 11989973. The reversal of 11989963 is 36998911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11989963 - 2⁹ = 11989451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11989973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5770 + ... + 7567.

It is an arithmetic number, because the mean of its divisors is an integer number (1600560).

Almost surely, 2^11989963 is an apocalyptic number.

11989963 is a deficient number, since it is larger than the sum of its proper divisors (814517).

11989963 is a wasteful number, since it uses less digits than its factorization.

11989963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13397.

The product of its digits is 104976, while the sum is 46.

The square root of 11989963 is about 3462.6525959154. The cubic root of 11989963 is about 228.8790001680.

The spelling of 11989963 in words is "eleven million, nine hundred eighty-nine thousand, nine hundred sixty-three".