20141639 has 8 divisors (see below), whose sum is σ = 23068320. Its totient is φ = 17227296.

The previous prime is 20141623. The next prime is 20141657. The reversal of 20141639 is 93614102.

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

It is a cyclic number.

It is not a de Polignac number, because 20141639 - 2⁴ = 20141623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20141839) 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 7 ways as a sum of consecutive naturals, for example, 737 + ... + 6389.

It is an arithmetic number, because the mean of its divisors is an integer number (2883540).

Almost surely, 2^20141639 is an apocalyptic number.

20141639 is a deficient number, since it is larger than the sum of its proper divisors (2926681).

20141639 is an equidigital number, since it uses as much as digits as its factorization.

20141639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6169.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20141639 is about 4487.9437385065. The cubic root of 20141639 is about 272.0810339227.

The spelling of 20141639 in words is "twenty million, one hundred forty-one thousand, six hundred thirty-nine".