3120869 has 4 divisors (see below), whose sum is σ = 3150144. Its totient is φ = 3091596.

The previous prime is 3120857. The next prime is 3120881. The reversal of 3120869 is 9680213.

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: 9680213 = 349 ⋅27737.

It is an interprime number because it is at equal distance from previous prime (3120857) and next prime (3120881).

It is a cyclic number.

It is not a de Polignac number, because 3120869 - 2⁸ = 3120613 is a prime.

It is a super-2 number, since 2×3120869² = 19479646630322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3120889) 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, 14477 + ... + 14690.

It is an arithmetic number, because the mean of its divisors is an integer number (787536).

Almost surely, 2^3120869 is an apocalyptic number.

It is an amenable number.

3120869 is a deficient number, since it is larger than the sum of its proper divisors (29275).

3120869 is a wasteful number, since it uses less digits than its factorization.

3120869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29274.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 3120869 is about 1766.5981433252. The cubic root of 3120869 is about 146.1364365441.

The spelling of 3120869 in words is "three million, one hundred twenty thousand, eight hundred sixty-nine".