11822139 has 32 divisors (see below), whose sum is σ = 20321280. Its totient is φ = 6652800.

The previous prime is 11822093. The next prime is 11822143. The reversal of 11822139 is 93122811.

11822139 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11822139 - 2⁸ = 11821883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11822149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12979 + ... + 13859.

It is an arithmetic number, because the mean of its divisors is an integer number (635040).

Almost surely, 2^11822139 is an apocalyptic number.

11822139 is a deficient number, since it is larger than the sum of its proper divisors (8499141).

11822139 is an equidigital number, since it uses as much as digits as its factorization.

11822139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 962 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 11822139 is about 3438.3337534335. Note that the first 3 decimals coincide. The cubic root of 11822139 is about 227.8061024639.

It can be divided in two parts, 1182 and 2139, that added together give a triangular number (3321 = T₈₁).

The spelling of 11822139 in words is "eleven million, eight hundred twenty-two thousand, one hundred thirty-nine".