639048753 has 12 divisors (see below), whose sum is σ = 1054937728. Its totient is φ = 365170680.

The previous prime is 639048731. The next prime is 639048763. The reversal of 639048753 is 357840936.

639048753 is a `hidden beast` number, since 639 + 0 + 4 + 8 + 7 + 5 + 3 = 666.

It is not a de Polignac number, because 639048753 - 2⁶ = 639048689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 639048699 and 639048708.

It is not an unprimeable number, because it can be changed into a prime (639048763) 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 11 ways as a sum of consecutive naturals, for example, 5071753 + ... + 5071878.

Almost surely, 2^639048753 is an apocalyptic number.

639048753 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

639048753 is a deficient number, since it is larger than the sum of its proper divisors (415888975).

639048753 is a wasteful number, since it uses less digits than its factorization.

639048753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10143644 (or 10143641 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 639048753 is about 25279.4136205728. The cubic root of 639048753 is about 861.3467060687.

The spelling of 639048753 in words is "six hundred thirty-nine million, forty-eight thousand, seven hundred fifty-three".