11949719 has 4 divisors (see below), whose sum is σ = 12469296. Its totient is φ = 11430144.

The previous prime is 11949713. The next prime is 11949731. The reversal of 11949719 is 91794911.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11949719 is a prime.

It is a super-2 number, since 2×11949719² = 285591568357922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11949713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259754 + ... + 259799.

It is an arithmetic number, because the mean of its divisors is an integer number (3117324).

Almost surely, 2^11949719 is an apocalyptic number.

11949719 is a deficient number, since it is larger than the sum of its proper divisors (519577).

11949719 is an equidigital number, since it uses as much as digits as its factorization.

11949719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519576.

The product of its digits is 20412, while the sum is 41.

The square root of 11949719 is about 3456.8365596308. The cubic root of 11949719 is about 228.6226376520.

The spelling of 11949719 in words is "eleven million, nine hundred forty-nine thousand, seven hundred nineteen".