639329103 has 24 divisors (see below), whose sum is σ = 1058567328. Its totient is φ = 364234752.

The previous prime is 639329101. The next prime is 639329107. The reversal of 639329103 is 301923936.

It is a happy number.

639329103 is a `hidden beast` number, since 639 + 3 + 2 + 9 + 10 + 3 = 666.

It is not a de Polignac number, because 639329103 - 2¹ = 639329101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (639329101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6175 + ... + 36287.

It is an arithmetic number, because the mean of its divisors is an integer number (44106972).

Almost surely, 2^639329103 is an apocalyptic number.

639329103 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

639329103 is a deficient number, since it is larger than the sum of its proper divisors (419238225).

639329103 is a wasteful number, since it uses less digits than its factorization.

639329103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30463 (or 30460 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The square root of 639329103 is about 25284.9580383278. The cubic root of 639329103 is about 861.4726449449.

The spelling of 639329103 in words is "six hundred thirty-nine million, three hundred twenty-nine thousand, one hundred three".