11923397 has 4 divisors (see below), whose sum is σ = 11959116. Its totient is φ = 11887680.

The previous prime is 11923381. The next prime is 11923403. The reversal of 11923397 is 79332911.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7043716 + 4879681 = 2654^2 + 2209^2 .

It is a cyclic number.

It is not a de Polignac number, because 11923397 - 2⁴ = 11923381 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 (11923367) 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, 17354 + ... + 18027.

It is an arithmetic number, because the mean of its divisors is an integer number (2989779).

Almost surely, 2^11923397 is an apocalyptic number.

It is an amenable number.

11923397 is a deficient number, since it is larger than the sum of its proper divisors (35719).

11923397 is an equidigital number, since it uses as much as digits as its factorization.

11923397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35718.

The product of its digits is 10206, while the sum is 35.

The square root of 11923397 is about 3453.0272225976. The cubic root of 11923397 is about 228.4546496289.

The spelling of 11923397 in words is "eleven million, nine hundred twenty-three thousand, three hundred ninety-seven".