11993869 has 8 divisors (see below), whose sum is σ = 12423680. Its totient is φ = 11566800.

The previous prime is 11993843. The next prime is 11993897. The reversal of 11993869 is 96839911.

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 11993869 - 2⁹ = 11993357 is a prime.

It is a super-2 number, since 2×11993869² = 287705787178322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11993899) 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, 12592 + ... + 13510.

It is an arithmetic number, because the mean of its divisors is an integer number (1552960).

Almost surely, 2^11993869 is an apocalyptic number.

It is an amenable number.

11993869 is a deficient number, since it is larger than the sum of its proper divisors (429811).

11993869 is an equidigital number, since it uses as much as digits as its factorization.

11993869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371.

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

The square root of 11993869 is about 3463.2165684519. The cubic root of 11993869 is about 228.9038516295.

The spelling of 11993869 in words is "eleven million, nine hundred ninety-three thousand, eight hundred sixty-nine".