11857139 has 8 divisors (see below), whose sum is σ = 13628160. Its totient is φ = 10105416.

The previous prime is 11857127. The next prime is 11857147. The reversal of 11857139 is 93175811.

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 11857139 - 2⁴ = 11857123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11857099 and 11857108.

It is not an unprimeable number, because it can be changed into a prime (11857039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3479 + ... + 5984.

It is an arithmetic number, because the mean of its divisors is an integer number (1703520).

Almost surely, 2^11857139 is an apocalyptic number.

11857139 is a deficient number, since it is larger than the sum of its proper divisors (1771021).

11857139 is an equidigital number, since it uses as much as digits as its factorization.

11857139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9649.

The product of its digits is 7560, while the sum is 35.

The square root of 11857139 is about 3443.4196665524. The cubic root of 11857139 is about 228.0306912106.

The spelling of 11857139 in words is "eleven million, eight hundred fifty-seven thousand, one hundred thirty-nine".