3242447639 has 4 divisors (see below), whose sum is σ = 3283491360. Its totient is φ = 3201403920.

The previous prime is 3242447629. The next prime is 3242447653. The reversal of 3242447639 is 9367442423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9367442423 = 1109 ⋅8446747.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3242447639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3242447639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3242447629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20521742 + ... + 20521899.

It is an arithmetic number, because the mean of its divisors is an integer number (820872840).

Almost surely, 2^3242447639 is an apocalyptic number.

3242447639 is a deficient number, since it is larger than the sum of its proper divisors (41043721).

3242447639 is an equidigital number, since it uses as much as digits as its factorization.

3242447639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41043720.

The product of its digits is 870912, while the sum is 44.

The square root of 3242447639 is about 56942.4941410191. The cubic root of 3242447639 is about 1480.0997678970.

The spelling of 3242447639 in words is "three billion, two hundred forty-two million, four hundred forty-seven thousand, six hundred thirty-nine".