639482 has 8 divisors (see below), whose sum is σ = 979776. Its totient is φ = 312892.

The previous prime is 639451. The next prime is 639487. The reversal of 639482 is 284936.

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

It is a d-powerful number, because it can be written as 6⁵ + 3¹² + 4⁴ + 9⁵ + 8⁵ + 2¹³ .

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (639487) 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 3 ways as a sum of consecutive naturals, for example, 3308 + ... + 3495.

It is an arithmetic number, because the mean of its divisors is an integer number (122472).

2⁶³⁹⁴⁸² is an apocalyptic number.

639482 is a deficient number, since it is larger than the sum of its proper divisors (340294).

639482 is a wasteful number, since it uses less digits than its factorization.

639482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6852.

The product of its digits is 10368, while the sum is 32.

The square root of 639482 is about 799.6761844647. The cubic root of 639482 is about 86.1541313848.

The spelling of 639482 in words is "six hundred thirty-nine thousand, four hundred eighty-two".