64002439 has 8 divisors (see below), whose sum is σ = 64655360. Its totient is φ = 63353016.

The previous prime is 64002413. The next prime is 64002451. The reversal of 64002439 is 93420046.

64002439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64002439 - 2¹³ = 63994247 is a prime.

It is a Duffinian number.

64002439 is a modest number, since divided by 2439 gives 640 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64002479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49402 + ... + 50680.

It is an arithmetic number, because the mean of its divisors is an integer number (8081920).

Almost surely, 2^64002439 is an apocalyptic number.

64002439 is a deficient number, since it is larger than the sum of its proper divisors (652921).

64002439 is a wasteful number, since it uses less digits than its factorization.

64002439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 64002439 is about 8000.1524360477. The cubic root of 64002439 is about 400.0050811855.

The spelling of 64002439 in words is "sixty-four million, two thousand, four hundred thirty-nine".