3099381 has 4 divisors (see below), whose sum is σ = 4132512. Its totient is φ = 2066252.

The previous prime is 3099367. The next prime is 3099391. The reversal of 3099381 is 1839903.

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.

It is a cyclic number.

It is not a de Polignac number, because 3099381 - 2⁹ = 3098869 is a prime.

It is a super-2 number, since 2×3099381² = 19212325166322, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3099331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516561 + ... + 516566.

It is an arithmetic number, because the mean of its divisors is an integer number (1033128).

Almost surely, 2^3099381 is an apocalyptic number.

It is an amenable number.

3099381 is a deficient number, since it is larger than the sum of its proper divisors (1033131).

3099381 is a wasteful number, since it uses less digits than its factorization.

3099381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033130.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 3099381 is about 1760.5058932023. The cubic root of 3099381 is about 145.8002679502.

The spelling of 3099381 in words is "three million, ninety-nine thousand, three hundred eighty-one".