4249685209 has 16 divisors (see below), whose sum is σ = 5441510016. Its totient is φ = 3221942400.

The previous prime is 4249685159. The next prime is 4249685213. The reversal of 4249685209 is 9025869424.

It is a cyclic number.

It is not a de Polignac number, because 4249685209 - 2²³ = 4241296601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4249685249) 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, 742972 + ... + 748669.

It is an arithmetic number, because the mean of its divisors is an integer number (340094376).

Almost surely, 2^4249685209 is an apocalyptic number.

It is an amenable number.

4249685209 is a deficient number, since it is larger than the sum of its proper divisors (1191824807).

4249685209 is a wasteful number, since it uses less digits than its factorization.

4249685209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491696.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The square root of 4249685209 is about 65189.6096705602. The cubic root of 4249685209 is about 1619.7659074694.

The spelling of 4249685209 in words is "four billion, two hundred forty-nine million, six hundred eighty-five thousand, two hundred nine".