11427391 has 2 divisors, whose sum is σ = 11427392. Its totient is φ = 11427390.

The previous prime is 11427371. The next prime is 11427401. The reversal of 11427391 is 19372411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11427391 - 2⁷ = 11427263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11427301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5713695 + 5713696.

It is an arithmetic number, because the mean of its divisors is an integer number (5713696).

Almost surely, 2^11427391 is an apocalyptic number.

11427391 is a deficient number, since it is larger than the sum of its proper divisors (1).

11427391 is an equidigital number, since it uses as much as digits as its factorization.

11427391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 11427391 is about 3380.4424266655. The cubic root of 11427391 is about 225.2418206665.

The spelling of 11427391 in words is "eleven million, four hundred twenty-seven thousand, three hundred ninety-one".