11780139 has 24 divisors (see below), whose sum is σ = 18444288. Its totient is φ = 6667920.

The previous prime is 11780123. The next prime is 11780147. The reversal of 11780139 is 93108711.

It is not a de Polignac number, because 11780139 - 2⁴ = 11780123 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11780149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18354 + ... + 18984.

It is an arithmetic number, because the mean of its divisors is an integer number (768512).

Almost surely, 2^11780139 is an apocalyptic number.

11780139 is a deficient number, since it is larger than the sum of its proper divisors (6664149).

11780139 is a wasteful number, since it uses less digits than its factorization.

11780139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 11780139 is about 3432.2207096864. The cubic root of 11780139 is about 227.5360100789.

The spelling of 11780139 in words is "eleven million, seven hundred eighty thousand, one hundred thirty-nine".