4395640139 has 16 divisors (see below), whose sum is σ = 5344548480. Its totient is φ = 3563026560.

The previous prime is 4395640129. The next prime is 4395640153. The reversal of 4395640139 is 9310465934.

It is a cyclic number.

It is not a de Polignac number, because 4395640139 - 2⁸ = 4395639883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4395640139.

It is not an unprimeable number, because it can be changed into a prime (4395640129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615029 + ... + 622134.

It is an arithmetic number, because the mean of its divisors is an integer number (334034280).

Almost surely, 2^4395640139 is an apocalyptic number.

4395640139 is a deficient number, since it is larger than the sum of its proper divisors (948908341).

4395640139 is a wasteful number, since it uses less digits than its factorization.

4395640139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237210.

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 4395640139 is about 66299.6239732926. The cubic root of 4395640139 is about 1638.1011309966.

The spelling of 4395640139 in words is "four billion, three hundred ninety-five million, six hundred forty thousand, one hundred thirty-nine".