64382939 has 4 divisors (see below), whose sum is σ = 66459840. Its totient is φ = 62306040.

The previous prime is 64382917. The next prime is 64382959. The reversal of 64382939 is 93928346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64382939 - 2¹⁶ = 64317403 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 64382939.

It is not an unprimeable number, because it can be changed into a prime (64382959) 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, 1038404 + ... + 1038465.

It is an arithmetic number, because the mean of its divisors is an integer number (16614960).

Almost surely, 2^64382939 is an apocalyptic number.

64382939 is a deficient number, since it is larger than the sum of its proper divisors (2076901).

64382939 is a wasteful number, since it uses less digits than its factorization.

64382939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2076900.

The product of its digits is 279936, while the sum is 44.

The square root of 64382939 is about 8023.8979928710. The cubic root of 64382939 is about 400.7962036810.

The spelling of 64382939 in words is "sixty-four million, three hundred eighty-two thousand, nine hundred thirty-nine".