11829985 has 4 divisors (see below), whose sum is σ = 14195988. Its totient is φ = 9463984.

The previous prime is 11829959. The next prime is 11829991. The reversal of 11829985 is 58992811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58992811 = 1697 ⋅34763.

It can be written as a sum of positive squares in 2 ways, for example, as 1306449 + 10523536 = 1143^2 + 3244^2 .

It is a cyclic number.

It is not a de Polignac number, because 11829985 - 2⁹ = 11829473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1182994 + ... + 1183003.

It is an arithmetic number, because the mean of its divisors is an integer number (3548997).

Almost surely, 2^11829985 is an apocalyptic number.

It is an amenable number.

11829985 is a deficient number, since it is larger than the sum of its proper divisors (2366003).

11829985 is an equidigital number, since it uses as much as digits as its factorization.

11829985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366002.

The product of its digits is 51840, while the sum is 43.

The square root of 11829985 is about 3439.4745238190. The cubic root of 11829985 is about 227.8564873511.

It can be divided in two parts, 118 and 29985, that added together give a palindrome (30103).

The spelling of 11829985 in words is "eleven million, eight hundred twenty-nine thousand, nine hundred eighty-five".