4201639 has 8 divisors (see below), whose sum is σ = 4635792. Its totient is φ = 3783360.

The previous prime is 4201633. The next prime is 4201649. The reversal of 4201639 is 9361024.

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 4201639 - 2¹³ = 4193447 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 2³ + 0 + 1 + 6² + 3⁸ + 9³ .

It is a Duffinian number.

4201639 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4201633) 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, 3409 + ... + 4474.

It is an arithmetic number, because the mean of its divisors is an integer number (579474).

Almost surely, 2^4201639 is an apocalyptic number.

4201639 is a deficient number, since it is larger than the sum of its proper divisors (434153).

4201639 is a wasteful number, since it uses less digits than its factorization.

4201639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7937.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 4201639 is about 2049.7899892428. The cubic root of 4201639 is about 161.3638492504.

The spelling of 4201639 in words is "four million, two hundred one thousand, six hundred thirty-nine".