3929290085 has 16 divisors (see below), whose sum is σ = 5418521472. Its totient is φ = 2679480000.

The previous prime is 3929290081. The next prime is 3929290093. The reversal of 3929290085 is 5800929293.

3929290085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3929290085 - 2² = 3929290081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3929290081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303791 + ... + 316460.

It is an arithmetic number, because the mean of its divisors is an integer number (338657592).

Almost surely, 2^3929290085 is an apocalyptic number.

3929290085 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3929290085 is a deficient number, since it is larger than the sum of its proper divisors (1489231387).

3929290085 is a wasteful number, since it uses less digits than its factorization.

3929290085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620444.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 3929290085 is about 62684.0496857055. The cubic root of 3929290085 is about 1577.9916378549.

The spelling of 3929290085 in words is "three billion, nine hundred twenty-nine million, two hundred ninety thousand, eighty-five".