4099985955 has 24 divisors (see below), whose sum is σ = 7653308208. Its totient is φ = 2018454336.

The previous prime is 4099985899. The next prime is 4099985959. The reversal of 4099985955 is 5595899904.

It is not a de Polignac number, because 4099985955 - 2⁹ = 4099985443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4099985892 and 4099985901.

It is not an unprimeable number, because it can be changed into a prime (4099985959) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3503677 + ... + 3504846.

It is an arithmetic number, because the mean of its divisors is an integer number (318887842).

Almost surely, 2^4099985955 is an apocalyptic number.

4099985955 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4099985955 is a deficient number, since it is larger than the sum of its proper divisors (3553322253).

4099985955 is a wasteful number, since it uses less digits than its factorization.

4099985955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7008547 (or 7008544 counting only the distinct ones).

The product of its (nonzero) digits is 26244000, while the sum is 63.

The square root of 4099985955 is about 64031.1327012103. The cubic root of 4099985955 is about 1600.5188362947.

The spelling of 4099985955 in words is "four billion, ninety-nine million, nine hundred eighty-five thousand, nine hundred fifty-five".