11972969 has 8 divisors (see below), whose sum is σ = 12459720. Its totient is φ = 11491200.

The previous prime is 11972959. The next prime is 11972971. The reversal of 11972969 is 96927911.

It can be written as a sum of positive squares in 4 ways, for example, as 160000 + 11812969 = 400^2 + 3437^2 .

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 11972969 - 2⁴ = 11972953 is a prime.

It is a super-2 number, since 2×11972969² = 286703973349922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11972959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4109 + ... + 6389.

It is an arithmetic number, because the mean of its divisors is an integer number (1557465).

Almost surely, 2^11972969 is an apocalyptic number.

It is an amenable number.

11972969 is a deficient number, since it is larger than the sum of its proper divisors (486751).

11972969 is a wasteful number, since it uses less digits than its factorization.

11972969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491.

The product of its digits is 61236, while the sum is 44.

The square root of 11972969 is about 3460.1978267145. The cubic root of 11972969 is about 228.7708149910.

The spelling of 11972969 in words is "eleven million, nine hundred seventy-two thousand, nine hundred sixty-nine".