11719399 has 4 divisors (see below), whose sum is σ = 12005280. Its totient is φ = 11433520.

The previous prime is 11719387. The next prime is 11719427. The reversal of 11719399 is 99391711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11719399 - 2¹¹ = 11717351 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11719369) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142879 + ... + 142960.

It is an arithmetic number, because the mean of its divisors is an integer number (3001320).

Almost surely, 2^11719399 is an apocalyptic number.

11719399 is a deficient number, since it is larger than the sum of its proper divisors (285881).

11719399 is an equidigital number, since it uses as much as digits as its factorization.

11719399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285880.

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

The square root of 11719399 is about 3423.3607756122. The cubic root of 11719399 is about 227.1442671333.

The spelling of 11719399 in words is "eleven million, seven hundred nineteen thousand, three hundred ninety-nine".