11991363 has 16 divisors (see below), whose sum is σ = 16313856. Its totient is φ = 7833600.

The previous prime is 11991313. The next prime is 11991373. The reversal of 11991363 is 36319911.

It is a happy number.

It is not a de Polignac number, because 11991363 - 2⁸ = 11991107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11991313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46531 + ... + 46787.

It is an arithmetic number, because the mean of its divisors is an integer number (1019616).

Almost surely, 2^11991363 is an apocalyptic number.

11991363 is a deficient number, since it is larger than the sum of its proper divisors (4322493).

11991363 is a wasteful number, since it uses less digits than its factorization.

11991363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514.

The product of its digits is 4374, while the sum is 33.

The square root of 11991363 is about 3462.8547471703. The cubic root of 11991363 is about 228.8879081224.

The spelling of 11991363 in words is "eleven million, nine hundred ninety-one thousand, three hundred sixty-three".