3950786809 has 8 divisors (see below), whose sum is σ = 4046565600. Its totient is φ = 3855185376.

The previous prime is 3950786747. The next prime is 3950786821. The reversal of 3950786809 is 9086870593.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3950786809 - 2⁷ = 3950786681 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 3950786809.

It is not an unprimeable number, because it can be changed into a prime (3950786849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1314 + ... + 88900.

It is an arithmetic number, because the mean of its divisors is an integer number (505820700).

Almost surely, 2^3950786809 is an apocalyptic number.

It is an amenable number.

3950786809 is a deficient number, since it is larger than the sum of its proper divisors (95778791).

3950786809 is a wasteful number, since it uses less digits than its factorization.

3950786809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88679.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The square root of 3950786809 is about 62855.2846545141. The cubic root of 3950786809 is about 1580.8640801831.

The spelling of 3950786809 in words is "three billion, nine hundred fifty million, seven hundred eighty-six thousand, eight hundred nine".