11820139 has 8 divisors (see below), whose sum is σ = 12339360. Its totient is φ = 11308416.

The previous prime is 11820121. The next prime is 11820161. The reversal of 11820139 is 93102811.

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 11820139 - 2⁹ = 11819627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11820169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1474 + ... + 5080.

It is an arithmetic number, because the mean of its divisors is an integer number (1542420).

Almost surely, 2^11820139 is an apocalyptic number.

11820139 is a deficient number, since it is larger than the sum of its proper divisors (519221).

11820139 is a wasteful number, since it uses less digits than its factorization.

11820139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3749.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 11820139 is about 3438.0429025828. The cubic root of 11820139 is about 227.7932554402.

The spelling of 11820139 in words is "eleven million, eight hundred twenty thousand, one hundred thirty-nine".