3099945 has 32 divisors (see below), whose sum is σ = 5328000. Its totient is φ = 1534464.

The previous prime is 3099937. The next prime is 3099953. The reversal of 3099945 is 5499903.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3099937) and next prime (3099953).

It is not a de Polignac number, because 3099945 - 2³ = 3099937 is a prime.

It is a Curzon number.

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, 20731 + ... + 20879.

It is an arithmetic number, because the mean of its divisors is an integer number (166500).

Almost surely, 2^3099945 is an apocalyptic number.

It is an amenable number.

3099945 is a deficient number, since it is larger than the sum of its proper divisors (2228055).

3099945 is a wasteful number, since it uses less digits than its factorization.

3099945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249.

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 3099945 is about 1760.6660671462. Note that the first 3 decimals coincide. The cubic root of 3099945 is about 145.8091112605.

The spelling of 3099945 in words is "three million, ninety-nine thousand, nine hundred forty-five".