4535639 has 2 divisors, whose sum is σ = 4535640. Its totient is φ = 4535638.

The previous prime is 4535611. The next prime is 4535647. The reversal of 4535639 is 9365354.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4535639 - 2⁸ = 4535383 is a prime.

It is a super-2 number, since 2×4535639² = 41144042276642, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4¹¹ + 5⁷ + 3⁸ + 5⁷ + 6⁴ + 3¹¹ + 9² .

It is a junction number, because it is equal to n+sod(n) for n = 4535599 and 4535608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4535689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2267819 + 2267820.

It is an arithmetic number, because the mean of its divisors is an integer number (2267820).

Almost surely, 2^4535639 is an apocalyptic number.

4535639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4535639 is an equidigital number, since it uses as much as digits as its factorization.

4535639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 35.

The square root of 4535639 is about 2129.7039700390. The cubic root of 4535639 is about 165.5310590571.

The spelling of 4535639 in words is "four million, five hundred thirty-five thousand, six hundred thirty-nine".