4352639 has 4 divisors (see below), whose sum is σ = 4502760. Its totient is φ = 4202520.

The previous prime is 4352611. The next prime is 4352641. The reversal of 4352639 is 9362534.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4352639 - 2¹² = 4348543 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 (4352039) 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 3 ways as a sum of consecutive naturals, for example, 75017 + ... + 75074.

It is an arithmetic number, because the mean of its divisors is an integer number (1125690).

Almost surely, 2^4352639 is an apocalyptic number.

4352639 is a deficient number, since it is larger than the sum of its proper divisors (150121).

4352639 is a wasteful number, since it uses less digits than its factorization.

4352639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150120.

The product of its digits is 19440, while the sum is 32.

The square root of 4352639 is about 2086.2979173646. The cubic root of 4352639 is about 163.2741944259.

The spelling of 4352639 in words is "four million, three hundred fifty-two thousand, six hundred thirty-nine".