11639043 has 24 divisors (see below), whose sum is σ = 18695040. Its totient is φ = 6929280.

The previous prime is 11639029. The next prime is 11639051. The reversal of 11639043 is 34093611.

It is not a de Polignac number, because 11639043 - 2⁵ = 11639011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11638998 and 11639016.

It is not an unprimeable number, because it can be changed into a prime (11639093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2023 + ... + 5231.

It is an arithmetic number, because the mean of its divisors is an integer number (778960).

Almost surely, 2^11639043 is an apocalyptic number.

11639043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11639043 is a deficient number, since it is larger than the sum of its proper divisors (7055997).

11639043 is a wasteful number, since it uses less digits than its factorization.

11639043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3259 (or 3256 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 11639043 is about 3411.6041681297. The cubic root of 11639043 is about 226.6239252839.

The spelling of 11639043 in words is "eleven million, six hundred thirty-nine thousand, forty-three".