3966389914742 has 4 divisors (see below), whose sum is σ = 5949584872116. Its totient is φ = 1983194957370.

The previous prime is 3966389914741. The next prime is 3966389914759. The reversal of 3966389914742 is 2474199836693.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3966389914741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991597478684 + ... + 991597478687.

It is an arithmetic number, because the mean of its divisors is an integer number (1487396218029).

Almost surely, 2^{3966389914742} is an apocalyptic number.

3966389914742 is a deficient number, since it is larger than the sum of its proper divisors (1983194957374).

3966389914742 is a wasteful number, since it uses less digits than its factorization.

3966389914742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983194957373.

The product of its digits is 423263232, while the sum is 71.

The spelling of 3966389914742 in words is "three trillion, nine hundred sixty-six billion, three hundred eighty-nine million, nine hundred fourteen thousand, seven hundred forty-two".