11893997 has 4 divisors (see below), whose sum is σ = 11901600. Its totient is φ = 11886396.

The previous prime is 11893993. The next prime is 11894009. The reversal of 11893997 is 79939811.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11893997 - 2² = 11893993 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 (11893993) 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, 497 + ... + 4902.

It is an arithmetic number, because the mean of its divisors is an integer number (2975400).

Almost surely, 2^11893997 is an apocalyptic number.

It is an amenable number.

11893997 is a deficient number, since it is larger than the sum of its proper divisors (7603).

11893997 is an equidigital number, since it uses as much as digits as its factorization.

11893997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7602.

The product of its digits is 122472, while the sum is 47.

The square root of 11893997 is about 3448.7674609924. The cubic root of 11893997 is about 228.2667251442.

The spelling of 11893997 in words is "eleven million, eight hundred ninety-three thousand, nine hundred ninety-seven".