11400491 has 2 divisors, whose sum is σ = 11400492. Its totient is φ = 11400490.

The previous prime is 11400481. The next prime is 11400497. The reversal of 11400491 is 19400411.

It is a strong prime.

It is an emirp because it is prime and its reverse (19400411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11400491 - 2⁶ = 11400427 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11400497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5700245 + 5700246.

It is an arithmetic number, because the mean of its divisors is an integer number (5700246).

Almost surely, 2^11400491 is an apocalyptic number.

11400491 is a deficient number, since it is larger than the sum of its proper divisors (1).

11400491 is an equidigital number, since it uses as much as digits as its factorization.

11400491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 11400491 is about 3376.4613132687. The cubic root of 11400491 is about 225.0649425705.

The spelling of 11400491 in words is "eleven million, four hundred thousand, four hundred ninety-one".