3121449 has 4 divisors (see below), whose sum is σ = 4161936. Its totient is φ = 2080964.

The previous prime is 3121441. The next prime is 3121457. The reversal of 3121449 is 9441213.

3121449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (3121441) and next prime (3121457).

It is a cyclic number.

It is not a de Polignac number, because 3121449 - 2³ = 3121441 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3121441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520239 + ... + 520244.

It is an arithmetic number, because the mean of its divisors is an integer number (1040484).

Almost surely, 2^3121449 is an apocalyptic number.

It is an amenable number.

3121449 is a deficient number, since it is larger than the sum of its proper divisors (1040487).

3121449 is a wasteful number, since it uses less digits than its factorization.

3121449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040486.

The product of its digits is 864, while the sum is 24.

The square root of 3121449 is about 1766.7622930094. The cubic root of 3121449 is about 146.1454889248.

It can be divided in two parts, 3121 and 449, that added together give a triangular number (3570 = T₈₄).

The spelling of 3121449 in words is "three million, one hundred twenty-one thousand, four hundred forty-nine".