3969781347 has 16 divisors (see below), whose sum is σ = 6312199680. Its totient is φ = 2169818112.

The previous prime is 3969781339. The next prime is 3969781369. The reversal of 3969781347 is 7431879693.

3969781347 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3969781347 - 2³ = 3969781339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3969781327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4109022 + ... + 4109987.

It is an arithmetic number, because the mean of its divisors is an integer number (394512480).

Almost surely, 2^3969781347 is an apocalyptic number.

3969781347 is a deficient number, since it is larger than the sum of its proper divisors (2342418333).

3969781347 is a wasteful number, since it uses less digits than its factorization.

3969781347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8219042.

The product of its digits is 6858432, while the sum is 57.

The square root of 3969781347 is about 63006.2008615025. The cubic root of 3969781347 is about 1583.3935163040.

The spelling of 3969781347 in words is "three billion, nine hundred sixty-nine million, seven hundred eighty-one thousand, three hundred forty-seven".