3939731433 has 32 divisors (see below), whose sum is σ = 6644090880. Its totient is φ = 2283898320.

The previous prime is 3939731413. The next prime is 3939731437. The reversal of 3939731433 is 3341379393.

It is not a de Polignac number, because 3939731433 - 2¹³ = 3939723241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3939731437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281541 + ... + 295202.

It is an arithmetic number, because the mean of its divisors is an integer number (207627840).

Almost surely, 2^3939731433 is an apocalyptic number.

3939731433 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

3939731433 is a deficient number, since it is larger than the sum of its proper divisors (2704359447).

3939731433 is a wasteful number, since it uses less digits than its factorization.

3939731433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576786 (or 576780 counting only the distinct ones).

The product of its digits is 551124, while the sum is 45.

The square root of 3939731433 is about 62767.2799554035. The cubic root of 3939731433 is about 1579.3881400821.

The spelling of 3939731433 in words is "three billion, nine hundred thirty-nine million, seven hundred thirty-one thousand, four hundred thirty-three".