3099949 has 4 divisors (see below), whose sum is σ = 3105664. Its totient is φ = 3094236.

The previous prime is 3099937. The next prime is 3099953. The reversal of 3099949 is 9499903.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9499903 = 7 ⋅1357129.

It is a cyclic number.

It is not a de Polignac number, because 3099949 - 2¹⁷ = 2968877 is a prime.

It is a Duffinian number.

3099949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3099449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1947 + ... + 3160.

It is an arithmetic number, because the mean of its divisors is an integer number (776416).

Almost surely, 2^3099949 is an apocalyptic number.

It is an amenable number.

3099949 is a deficient number, since it is larger than the sum of its proper divisors (5715).

3099949 is an equidigital number, since it uses as much as digits as its factorization.

3099949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5714.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 3099949 is about 1760.6672030796. The cubic root of 3099949 is about 145.8091739752.

The spelling of 3099949 in words is "three million, ninety-nine thousand, nine hundred forty-nine".