4213639 has 2 divisors, whose sum is σ = 4213640. Its totient is φ = 4213638.

The previous prime is 4213609. The next prime is 4213673. The reversal of 4213639 is 9363124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4213639 - 2¹¹ = 4211591 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4213609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2106819 + 2106820.

It is an arithmetic number, because the mean of its divisors is an integer number (2106820).

Almost surely, 2^4213639 is an apocalyptic number.

4213639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4213639 is an equidigital number, since it uses as much as digits as its factorization.

4213639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 28.

The square root of 4213639 is about 2052.7150313670. The cubic root of 4213639 is about 161.5173231425.

The spelling of 4213639 in words is "four million, two hundred thirteen thousand, six hundred thirty-nine".