4006829639 has 4 divisors (see below), whose sum is σ = 4136082240. Its totient is φ = 3877577040.

The previous prime is 4006829623. The next prime is 4006829647. The reversal of 4006829639 is 9369286004.

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 4006829639 - 2⁴ = 4006829623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4006829593 and 4006829602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4006829669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64626254 + ... + 64626315.

It is an arithmetic number, because the mean of its divisors is an integer number (1034020560).

Almost surely, 2^4006829639 is an apocalyptic number.

4006829639 is a deficient number, since it is larger than the sum of its proper divisors (129252601).

4006829639 is a wasteful number, since it uses less digits than its factorization.

4006829639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129252600.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 4006829639 is about 63299.5232130543. The cubic root of 4006829639 is about 1588.3039862812.

The spelling of 4006829639 in words is "four billion, six million, eight hundred twenty-nine thousand, six hundred thirty-nine".