6890449 has 4 divisors (see below), whose sum is σ = 7050736. Its totient is φ = 6730164.

The previous prime is 6890447. The next prime is 6890453. The reversal of 6890449 is 9440986.

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 6890449 - 2¹ = 6890447 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6890447) 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, 80079 + ... + 80164.

It is an arithmetic number, because the mean of its divisors is an integer number (1762684).

Almost surely, 2^6890449 is an apocalyptic number.

It is an amenable number.

6890449 is a deficient number, since it is larger than the sum of its proper divisors (160287).

6890449 is a wasteful number, since it uses less digits than its factorization.

6890449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160286.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 6890449 is about 2624.9664759764. The cubic root of 6890449 is about 190.2899451225.

The spelling of 6890449 in words is "six million, eight hundred ninety thousand, four hundred forty-nine".