11993719 has 2 divisors, whose sum is σ = 11993720. Its totient is φ = 11993718.

The previous prime is 11993717. The next prime is 11993743. The reversal of 11993719 is 91739911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11993719 - 2¹ = 11993717 is a prime.

It is a super-2 number, since 2×11993719² = 287698590901922, which contains 22 as substring.

Together with 11993717, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11993717) 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, 5996859 + 5996860.

It is an arithmetic number, because the mean of its divisors is an integer number (5996860).

Almost surely, 2^11993719 is an apocalyptic number.

11993719 is a deficient number, since it is larger than the sum of its proper divisors (1).

11993719 is an equidigital number, since it uses as much as digits as its factorization.

11993719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15309, while the sum is 40.

The square root of 11993719 is about 3463.1949122162. The cubic root of 11993719 is about 228.9028973719.

The spelling of 11993719 in words is "eleven million, nine hundred ninety-three thousand, seven hundred nineteen".