11989969 has 8 divisors (see below), whose sum is σ = 13170240. Its totient is φ = 10864656.

The previous prime is 11989951. The next prime is 11989973. The reversal of 11989969 is 96998911.

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

It is not a de Polignac number, because 11989969 - 2¹³ = 11981777 is a prime.

It is a super-2 number, since 2×11989969² = 287518713241922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11989919) 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, 13282 + ... + 14155.

It is an arithmetic number, because the mean of its divisors is an integer number (1646280).

Almost surely, 2^11989969 is an apocalyptic number.

11989969 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11989969 is a deficient number, since it is larger than the sum of its proper divisors (1180271).

11989969 is a wasteful number, since it uses less digits than its factorization.

11989969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27479.

The product of its digits is 314928, while the sum is 52.

The square root of 11989969 is about 3462.6534623032. The cubic root of 11989969 is about 228.8790383464.

The spelling of 11989969 in words is "eleven million, nine hundred eighty-nine thousand, nine hundred sixty-nine".