3906662779 has 4 divisors (see below), whose sum is σ = 3922873240. Its totient is φ = 3890452320.

The previous prime is 3906662777. The next prime is 3906662791. The reversal of 3906662779 is 9772666093.

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 3906662779 - 2¹ = 3906662777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3906662777) 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, 8104869 + ... + 8105350.

It is an arithmetic number, because the mean of its divisors is an integer number (980718310).

Almost surely, 2^3906662779 is an apocalyptic number.

3906662779 is a deficient number, since it is larger than the sum of its proper divisors (16210461).

3906662779 is a wasteful number, since it uses less digits than its factorization.

3906662779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16210460.

The product of its (nonzero) digits is 5143824, while the sum is 55.

The square root of 3906662779 is about 62503.3021447667. The cubic root of 3906662779 is about 1574.9567844361.

The spelling of 3906662779 in words is "three billion, nine hundred six million, six hundred sixty-two thousand, seven hundred seventy-nine".