11639047 has 8 divisors (see below), whose sum is σ = 13484576. Its totient is φ = 9839232.

The previous prime is 11639029. The next prime is 11639051. The reversal of 11639047 is 74093611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11639047 - 2¹⁹ = 11114759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11639087) 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 7 ways as a sum of consecutive naturals, for example, 10878 + ... + 11899.

It is an arithmetic number, because the mean of its divisors is an integer number (1685572).

Almost surely, 2^11639047 is an apocalyptic number.

11639047 is a deficient number, since it is larger than the sum of its proper divisors (1845529).

11639047 is an equidigital number, since it uses as much as digits as its factorization.

11639047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22857.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 11639047 is about 3411.6047543641. The cubic root of 11639047 is about 226.6239512453.

The spelling of 11639047 in words is "eleven million, six hundred thirty-nine thousand, forty-seven".