3942429309 has 96 divisors (see below), whose sum is σ = 7384832000. Its totient is φ = 2011806720.

The previous prime is 3942429307. The next prime is 3942429341. The reversal of 3942429309 is 9039242493.

It is a happy number.

It is not a de Polignac number, because 3942429309 - 2¹ = 3942429307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3942429307) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1242477 + ... + 1245645.

Almost surely, 2^3942429309 is an apocalyptic number.

3942429309 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3942429309 is a deficient number, since it is larger than the sum of its proper divisors (3442402691).

3942429309 is a wasteful number, since it uses less digits than its factorization.

3942429309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3240 (or 3223 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The square root of 3942429309 is about 62788.7673792057. The cubic root of 3942429309 is about 1579.7485725275.

The spelling of 3942429309 in words is "three billion, nine hundred forty-two million, four hundred twenty-nine thousand, three hundred nine".