4199312985 has 48 divisors (see below), whose sum is σ = 7839121536. Its totient is φ = 1919570688.

The previous prime is 4199312981. The next prime is 4199312993. The reversal of 4199312985 is 5892139914.

It is not a de Polignac number, because 4199312985 - 2² = 4199312981 is a prime.

It is a super-2 number, since 2×4199312985² = 35268459091979220450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4199312981) 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, 243777 + ... + 260433.

It is an arithmetic number, because the mean of its divisors is an integer number (163315032).

Almost surely, 2^4199312985 is an apocalyptic number.

It is an amenable number.

4199312985 is a deficient number, since it is larger than the sum of its proper divisors (3639808551).

4199312985 is an frugal number, since it uses more digits than its factorization.

4199312985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16700 (or 16672 counting only the distinct ones).

The product of its digits is 699840, while the sum is 51.

The square root of 4199312985 is about 64802.1063315075. The cubic root of 4199312985 is about 1613.3406690305.

The spelling of 4199312985 in words is "four billion, one hundred ninety-nine million, three hundred twelve thousand, nine hundred eighty-five".