3809902705 has 32 divisors (see below), whose sum is σ = 5505442560. Its totient is φ = 2472560640.

The previous prime is 3809902693. The next prime is 3809902729. The reversal of 3809902705 is 5072099083.

It is a happy number.

3809902705 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3809902705 - 2¹¹ = 3809900657 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 876297 + ... + 880633.

It is an arithmetic number, because the mean of its divisors is an integer number (172045080).

Almost surely, 2^3809902705 is an apocalyptic number.

3809902705 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3809902705 is a deficient number, since it is larger than the sum of its proper divisors (1695539855).

3809902705 is a wasteful number, since it uses less digits than its factorization.

3809902705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5689.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 3809902705 is about 61724.4093126860. The cubic root of 3809902705 is about 1561.8451082091.

The spelling of 3809902705 in words is "three billion, eight hundred nine million, nine hundred two thousand, seven hundred five".