3949759778347 has 8 divisors (see below), whose sum is σ = 4232485320336. Its totient is φ = 3672632762112.

The previous prime is 3949759778333. The next prime is 3949759778353. The reversal of 3949759778347 is 7438779579493.

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 3949759778347 - 2¹¹ = 3949759776299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3949759778317) 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, 1399629978 + ... + 1399632799.

It is an arithmetic number, because the mean of its divisors is an integer number (529060665042).

Almost surely, 2^{3949759778347} is an apocalyptic number.

3949759778347 is a deficient number, since it is larger than the sum of its proper divisors (282725541989).

3949759778347 is a wasteful number, since it uses less digits than its factorization.

3949759778347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799262877.

The product of its digits is 10081895040, while the sum is 82.

The spelling of 3949759778347 in words is "three trillion, nine hundred forty-nine billion, seven hundred fifty-nine million, seven hundred seventy-eight thousand, three hundred forty-seven".