639141 has 8 divisors (see below), whose sum is σ = 897120. Its totient is φ = 403632.

The previous prime is 639137. The next prime is 639143. The reversal of 639141 is 141936.

639141 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 639141 - 2² = 639137 is a prime.

639141 is strictly pandigital in base 7.

639141 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 639141.

It is not an unprimeable number, because it can be changed into a prime (639143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5550 + ... + 5663.

It is an arithmetic number, because the mean of its divisors is an integer number (112140).

2⁶³⁹¹⁴¹ is an apocalyptic number.

It is an amenable number.

639141 is a deficient number, since it is larger than the sum of its proper divisors (257979).

639141 is a wasteful number, since it uses less digits than its factorization.

639141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11235.

The product of its digits is 648, while the sum is 24.

The square root of 639141 is about 799.4629447323. The cubic root of 639141 is about 86.1388149347.

It can be divided in two parts, 639 and 141, that added together give a triangular number (780 = T₃₉).

The spelling of 639141 in words is "six hundred thirty-nine thousand, one hundred forty-one".