3939653777442 has 32 divisors (see below), whose sum is σ = 8017836321600. Its totient is φ = 1290157471488.

The previous prime is 3939653777407. The next prime is 3939653777461. The reversal of 3939653777442 is 2447773569393.

It is a super-2 number, since 2×3939653777442² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2888763 + ... + 4027934.

It is an arithmetic number, because the mean of its divisors is an integer number (250557385050).

Almost surely, 2^{3939653777442} is an apocalyptic number.

3939653777442 is an abundant number, since it is smaller than the sum of its proper divisors (4078182544158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3939653777442 is a wasteful number, since it uses less digits than its factorization.

3939653777442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6918370.

The product of its digits is 720135360, while the sum is 69.

The spelling of 3939653777442 in words is "three trillion, nine hundred thirty-nine billion, six hundred fifty-three million, seven hundred seventy-seven thousand, four hundred forty-two".