11897423 has 2 divisors, whose sum is σ = 11897424. Its totient is φ = 11897422.

The previous prime is 11897419. The next prime is 11897449. The reversal of 11897423 is 32479811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11897423 - 2² = 11897419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11897723) 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 as a sum of consecutive naturals, namely, 5948711 + 5948712.

It is an arithmetic number, because the mean of its divisors is an integer number (5948712).

Almost surely, 2^11897423 is an apocalyptic number.

11897423 is a deficient number, since it is larger than the sum of its proper divisors (1).

11897423 is an equidigital number, since it uses as much as digits as its factorization.

11897423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 11897423 is about 3449.2641244184. The cubic root of 11897423 is about 228.2886400291.

The spelling of 11897423 in words is "eleven million, eight hundred ninety-seven thousand, four hundred twenty-three".