639322962 has 8 divisors (see below), whose sum is σ = 1278645936. Its totient is φ = 213107652.

The previous prime is 639322939. The next prime is 639322969. The reversal of 639322962 is 269223936.

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

639322962 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (639322969) 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, 53276908 + ... + 53276919.

It is an arithmetic number, because the mean of its divisors is an integer number (159830742).

Almost surely, 2^639322962 is an apocalyptic number.

639322962 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

639322962 is a wasteful number, since it uses less digits than its factorization.

639322962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106553832.

The product of its digits is 209952, while the sum is 42.

The square root of 639322962 is about 25284.8366022009. The cubic root of 639322962 is about 861.4698866783.

The spelling of 639322962 in words is "six hundred thirty-nine million, three hundred twenty-two thousand, nine hundred sixty-two".