11988597 has 4 divisors (see below), whose sum is σ = 15984800. Its totient is φ = 7992396.

The previous prime is 11988577. The next prime is 11988607. The reversal of 11988597 is 79588911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11988597 - 2⁶ = 11988533 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 (11988517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1998097 + ... + 1998102.

It is an arithmetic number, because the mean of its divisors is an integer number (3996200).

Almost surely, 2^11988597 is an apocalyptic number.

It is an amenable number.

11988597 is a deficient number, since it is larger than the sum of its proper divisors (3996203).

11988597 is an equidigital number, since it uses as much as digits as its factorization.

11988597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996202.

The product of its digits is 181440, while the sum is 48.

The square root of 11988597 is about 3462.4553426723. The cubic root of 11988597 is about 228.8703078813.

The spelling of 11988597 in words is "eleven million, nine hundred eighty-eight thousand, five hundred ninety-seven".