3099985 has 12 divisors (see below), whose sum is σ = 4327668. Its totient is φ = 2125536.

The previous prime is 3099977. The next prime is 3099997. The reversal of 3099985 is 5899903.

It can be written as a sum of positive squares in 2 ways, for example, as 370881 + 2729104 = 609^2 + 1652^2 .

It is not a de Polignac number, because 3099985 - 2³ = 3099977 is a prime.

It is a Duffinian number.

3099985 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6082 + ... + 6571.

It is an arithmetic number, because the mean of its divisors is an integer number (360639).

Almost surely, 2^3099985 is an apocalyptic number.

3099985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3099985 is a deficient number, since it is larger than the sum of its proper divisors (1227683).

3099985 is a wasteful number, since it uses less digits than its factorization.

3099985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12672 (or 12665 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 3099985 is about 1760.6774264470. The cubic root of 3099985 is about 145.8097384049.

The spelling of 3099985 in words is "three million, ninety-nine thousand, nine hundred eighty-five".