3919969042 has 16 divisors (see below), whose sum is σ = 6417353664. Its totient is φ = 1781010000.

The previous prime is 3919968991. The next prime is 3919969049. The reversal of 3919969042 is 2409699193.

It is not an unprimeable number, because it can be changed into a prime (3919969049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12292 + ... + 89392.

It is an arithmetic number, because the mean of its divisors is an integer number (401084604).

Almost surely, 2^3919969042 is an apocalyptic number.

3919969042 is a deficient number, since it is larger than the sum of its proper divisors (2497384622).

3919969042 is a wasteful number, since it uses less digits than its factorization.

3919969042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79425.

The product of its (nonzero) digits is 944784, while the sum is 52.

The square root of 3919969042 is about 62609.6561402472. The cubic root of 3919969042 is about 1576.7428818504.

It can be divided in two parts, 39199 and 69042, that added together give a square (108241 = 329²).

The spelling of 3919969042 in words is "three billion, nine hundred nineteen million, nine hundred sixty-nine thousand, forty-two".