4105639309 has 4 divisors (see below), whose sum is σ = 4105801504. Its totient is φ = 4105477116.

The previous prime is 4105639289. The next prime is 4105639319. The reversal of 4105639309 is 9039365014.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4105639309 - 2¹⁵ = 4105606541 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 (4105639319) 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, 34017 + ... + 96790.

It is an arithmetic number, because the mean of its divisors is an integer number (1026450376).

Almost surely, 2^4105639309 is an apocalyptic number.

It is an amenable number.

4105639309 is a deficient number, since it is larger than the sum of its proper divisors (162195).

4105639309 is a wasteful number, since it uses less digits than its factorization.

4105639309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162194.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 4105639309 is about 64075.2628476856. The cubic root of 4105639309 is about 1601.2541350683.

The spelling of 4105639309 in words is "four billion, one hundred five million, six hundred thirty-nine thousand, three hundred nine".