4139806209 has 48 divisors (see below), whose sum is σ = 7167663360. Its totient is φ = 2100500640.

The previous prime is 4139806207. The next prime is 4139806217. The reversal of 4139806209 is 9026089314.

It is not a de Polignac number, because 4139806209 - 2¹ = 4139806207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4139806207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39762 + ... + 99300.

It is an arithmetic number, because the mean of its divisors is an integer number (149326320).

Almost surely, 2^4139806209 is an apocalyptic number.

4139806209 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

4139806209 is a deficient number, since it is larger than the sum of its proper divisors (3027857151).

4139806209 is a wasteful number, since it uses less digits than its factorization.

4139806209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59610 (or 59603 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 4139806209 is about 64341.3258256309. The cubic root of 4139806209 is about 1605.6837191414.

The spelling of 4139806209 in words is "four billion, one hundred thirty-nine million, eight hundred six thousand, two hundred nine".