3947916669 has 8 divisors (see below), whose sum is σ = 5375886720. Its totient is φ = 2575945536.

The previous prime is 3947916659. The next prime is 3947916683. The reversal of 3947916669 is 9666197493.

3947916669 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3947916669 - 2¹⁶ = 3947851133 is a prime.

It is a super-2 number, since 2×3947916669² = 31172092050736111122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947916649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13999564 + ... + 13999845.

It is an arithmetic number, because the mean of its divisors is an integer number (671985840).

Almost surely, 2^3947916669 is an apocalyptic number.

It is an amenable number.

3947916669 is a deficient number, since it is larger than the sum of its proper divisors (1427970051).

3947916669 is a wasteful number, since it uses less digits than its factorization.

3947916669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27999459.

The product of its digits is 13226976, while the sum is 60.

The square root of 3947916669 is about 62832.4491723823. The cubic root of 3947916669 is about 1580.4811690790.

The spelling of 3947916669 in words is "three billion, nine hundred forty-seven million, nine hundred sixteen thousand, six hundred sixty-nine".