11043997 has 4 divisors (see below), whose sum is σ = 11625280. Its totient is φ = 10462716.

The previous prime is 11043973. The next prime is 11044001. The reversal of 11043997 is 79934011.

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 an emirpimes, since its reverse is a distinct semiprime: 79934011 = 881 ⋅90731.

It is a cyclic number.

It is not a de Polignac number, because 11043997 - 2⁷ = 11043869 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 (11043937) 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, 290613 + ... + 290650.

It is an arithmetic number, because the mean of its divisors is an integer number (2906320).

Almost surely, 2^11043997 is an apocalyptic number.

It is an amenable number.

11043997 is a deficient number, since it is larger than the sum of its proper divisors (581283).

11043997 is an equidigital number, since it uses as much as digits as its factorization.

11043997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581282.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 11043997 is about 3323.2509685547. The cubic root of 11043997 is about 222.6941250734.

The spelling of 11043997 in words is "eleven million, forty-three thousand, nine hundred ninety-seven".