11427397 has 4 divisors (see below), whose sum is σ = 11706156. Its totient is φ = 11148640.

The previous prime is 11427391. The next prime is 11427401. The reversal of 11427397 is 79372411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79372411 = 277 ⋅286543.

It can be written as a sum of positive squares in 2 ways, for example, as 2819041 + 8608356 = 1679^2 + 2934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11427397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11427391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139318 + ... + 139399.

It is an arithmetic number, because the mean of its divisors is an integer number (2926539).

Almost surely, 2^11427397 is an apocalyptic number.

It is an amenable number.

11427397 is a deficient number, since it is larger than the sum of its proper divisors (278759).

11427397 is an equidigital number, since it uses as much as digits as its factorization.

11427397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278758.

The product of its digits is 10584, while the sum is 34.

The square root of 11427397 is about 3380.4433141232. The cubic root of 11427397 is about 225.2418600879.

The spelling of 11427397 in words is "eleven million, four hundred twenty-seven thousand, three hundred ninety-seven".