11913911 has 8 divisors (see below), whose sum is σ = 12134400. Its totient is φ = 11695320.

The previous prime is 11913899. The next prime is 11913953. The reversal of 11913911 is 11931911.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11913911 - 2¹⁸ = 11651767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11913611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18566 + ... + 19196.

It is an arithmetic number, because the mean of its divisors is an integer number (1516800).

Almost surely, 2^11913911 is an apocalyptic number.

11913911 is a deficient number, since it is larger than the sum of its proper divisors (220489).

11913911 is an equidigital number, since it uses as much as digits as its factorization.

11913911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949.

The product of its digits is 243, while the sum is 26.

The square root of 11913911 is about 3451.6533719364. The cubic root of 11913911 is about 228.3940490085.

The spelling of 11913911 in words is "eleven million, nine hundred thirteen thousand, nine hundred eleven".