3938434491044 has 6 divisors (see below), whose sum is σ = 6892260359334. Its totient is φ = 1969217245520.

The previous prime is 3938434491031. The next prime is 3938434491049. The reversal of 3938434491044 is 4401944348393.

It can be written as a sum of positive squares in only one way, i.e., 2591256428644 + 1347178062400 = 1609738^2 + 1160680^2 .

It is a super-2 number, since 2×3938434491044² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3938434491049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492304311377 + ... + 492304311384.

It is an arithmetic number, because the mean of its divisors is an integer number (1148710059889).

Almost surely, 2^{3938434491044} is an apocalyptic number.

It is an amenable number.

3938434491044 is a deficient number, since it is larger than the sum of its proper divisors (2953825868290).

3938434491044 is a wasteful number, since it uses less digits than its factorization.

3938434491044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984608622765 (or 984608622763 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 56.

The spelling of 3938434491044 in words is "three trillion, nine hundred thirty-eight billion, four hundred thirty-four million, four hundred ninety-one thousand, forty-four".