3939042939 has 16 divisors (see below), whose sum is σ = 5657232672. Its totient is φ = 2423524608.

The previous prime is 3939042923. The next prime is 3939042941. The reversal of 3939042939 is 9392409393.

It is not a de Polignac number, because 3939042939 - 2⁴ = 3939042923 is a prime.

It is a super-4 number, since 4×3939042939⁴ (a number of 39 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3939042891 and 3939042900.

It is not an unprimeable number, because it can be changed into a prime (3939042949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288679 + ... + 302015.

It is an arithmetic number, because the mean of its divisors is an integer number (353577042).

Almost surely, 2^3939042939 is an apocalyptic number.

3939042939 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

3939042939 is a deficient number, since it is larger than the sum of its proper divisors (1718189733).

3939042939 is a wasteful number, since it uses less digits than its factorization.

3939042939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20926.

The product of its (nonzero) digits is 1417176, while the sum is 51.

The square root of 3939042939 is about 62761.7952181102. The cubic root of 3939042939 is about 1579.2961318978.

The spelling of 3939042939 in words is "three billion, nine hundred thirty-nine million, forty-two thousand, nine hundred thirty-nine".