11909783 has 2 divisors, whose sum is σ = 11909784. Its totient is φ = 11909782.

The previous prime is 11909773. The next prime is 11909801. The reversal of 11909783 is 38790911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11909783 - 2⁴ = 11909767 is a prime.

It is a super-2 number, since 2×11909783² = 283685862214178, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11909773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5954891 + 5954892.

It is an arithmetic number, because the mean of its divisors is an integer number (5954892).

Almost surely, 2^11909783 is an apocalyptic number.

11909783 is a deficient number, since it is larger than the sum of its proper divisors (1).

11909783 is an equidigital number, since it uses as much as digits as its factorization.

11909783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 11909783 is about 3451.0553458326. The cubic root of 11909783 is about 228.3676675360.

The spelling of 11909783 in words is "eleven million, nine hundred nine thousand, seven hundred eighty-three".