11943997 has 8 divisors (see below), whose sum is σ = 13177080. Its totient is φ = 10755840.

The previous prime is 11943991. The next prime is 11944001. The reversal of 11943997 is 79934911.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34596 + 11909401 = 186^2 + 3451^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11943997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11943991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10672 + ... + 11737.

It is an arithmetic number, because the mean of its divisors is an integer number (1647135).

Almost surely, 2^11943997 is an apocalyptic number.

It is an amenable number.

11943997 is a deficient number, since it is larger than the sum of its proper divisors (1233083).

11943997 is a wasteful number, since it uses less digits than its factorization.

11943997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22463.

The product of its digits is 61236, while the sum is 43.

The square root of 11943997 is about 3456.0088252202. The cubic root of 11943997 is about 228.5861406267.

The spelling of 11943997 in words is "eleven million, nine hundred forty-three thousand, nine hundred ninety-seven".