11397943 has 4 divisors (see below), whose sum is σ = 11412648. Its totient is φ = 11383240.

The previous prime is 11397937. The next prime is 11397977. The reversal of 11397943 is 34979311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11397943 - 2⁹ = 11397431 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 (11397913) 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, 6121 + ... + 7762.

It is an arithmetic number, because the mean of its divisors is an integer number (2853162).

Almost surely, 2^11397943 is an apocalyptic number.

11397943 is a deficient number, since it is larger than the sum of its proper divisors (14705).

11397943 is an equidigital number, since it uses as much as digits as its factorization.

11397943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14704.

The product of its digits is 20412, while the sum is 37.

The square root of 11397943 is about 3376.0839740741. The cubic root of 11397943 is about 225.0481740470.

The spelling of 11397943 in words is "eleven million, three hundred ninety-seven thousand, nine hundred forty-three".