4129849985 has 32 divisors (see below), whose sum is σ = 5246553600. Its totient is φ = 3114574848.

The previous prime is 4129849961. The next prime is 4129850033. The reversal of 4129849985 is 5899489214.

It is a cyclic number.

It is not a de Polignac number, because 4129849985 - 2⁶ = 4129849921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2585207 + ... + 2586803.

It is an arithmetic number, because the mean of its divisors is an integer number (163954800).

Almost surely, 2^4129849985 is an apocalyptic number.

It is an amenable number.

4129849985 is a deficient number, since it is larger than the sum of its proper divisors (1116703615).

4129849985 is a wasteful number, since it uses less digits than its factorization.

4129849985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937.

The product of its digits is 7464960, while the sum is 59.

The square root of 4129849985 is about 64263.9088836028. The cubic root of 4129849985 is about 1604.3954640079.

The spelling of 4129849985 in words is "four billion, one hundred twenty-nine million, eight hundred forty-nine thousand, nine hundred eighty-five".