11900863 has 4 divisors (see below), whose sum is σ = 12816328. Its totient is φ = 10985400.

The previous prime is 11900849. The next prime is 11900887. The reversal of 11900863 is 36800911.

It is a happy number.

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 11900863 - 2⁹ = 11900351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11900803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457713 + ... + 457738.

It is an arithmetic number, because the mean of its divisors is an integer number (3204082).

Almost surely, 2^11900863 is an apocalyptic number.

11900863 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11900863 is a deficient number, since it is larger than the sum of its proper divisors (915465).

11900863 is an equidigital number, since it uses as much as digits as its factorization.

11900863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915464.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 11900863 is about 3449.7627454653. The cubic root of 11900863 is about 228.3106402344.

The spelling of 11900863 in words is "eleven million, nine hundred thousand, eight hundred sixty-three".