3279981947 has 4 divisors (see below), whose sum is σ = 3578162136. Its totient is φ = 2981801760.

The previous prime is 3279981937. The next prime is 3279982019. The reversal of 3279981947 is 7491899723.

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 3279981947 - 2⁴ = 3279981931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3279981917) 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, 149090078 + ... + 149090099.

It is an arithmetic number, because the mean of its divisors is an integer number (894540534).

Almost surely, 2^3279981947 is an apocalyptic number.

3279981947 is a deficient number, since it is larger than the sum of its proper divisors (298180189).

3279981947 is a wasteful number, since it uses less digits than its factorization.

3279981947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298180188.

The product of its digits is 6858432, while the sum is 59.

The square root of 3279981947 is about 57271.1266433619. The cubic root of 3279981947 is about 1485.7890423698.

The spelling of 3279981947 in words is "three billion, two hundred seventy-nine million, nine hundred eighty-one thousand, nine hundred forty-seven".