3939361971 has 4 divisors (see below), whose sum is σ = 5252482632. Its totient is φ = 2626241312.

The previous prime is 3939361957. The next prime is 3939362003. The reversal of 3939361971 is 1791639393.

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 3939361971 - 2¹¹ = 3939359923 is a prime.

It is a super-2 number, since 2×3939361971² = 31037145477122009682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3939361901) 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 3 ways as a sum of consecutive naturals, for example, 656560326 + ... + 656560331.

It is an arithmetic number, because the mean of its divisors is an integer number (1313120658).

Almost surely, 2^3939361971 is an apocalyptic number.

3939361971 is a deficient number, since it is larger than the sum of its proper divisors (1313120661).

3939361971 is a wasteful number, since it uses less digits than its factorization.

3939361971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313120660.

The product of its digits is 826686, while the sum is 51.

The square root of 3939361971 is about 62764.3367765485. The cubic root of 3939361971 is about 1579.3387676691.

The spelling of 3939361971 in words is "three billion, nine hundred thirty-nine million, three hundred sixty-one thousand, nine hundred seventy-one".