3421689 has 4 divisors (see below), whose sum is σ = 4562256. Its totient is φ = 2281124.

The previous prime is 3421679. The next prime is 3421699. The reversal of 3421689 is 9861243.

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 (3421679) and next prime (3421699).

It is a cyclic number.

It is not a de Polignac number, because 3421689 - 2⁵ = 3421657 is a prime.

It is a super-2 number, since 2×3421689² = 23415911225442, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Curzon number.

3421689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3421669) 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, 570279 + ... + 570284.

It is an arithmetic number, because the mean of its divisors is an integer number (1140564).

Almost surely, 2^3421689 is an apocalyptic number.

It is an amenable number.

3421689 is a deficient number, since it is larger than the sum of its proper divisors (1140567).

3421689 is a wasteful number, since it uses less digits than its factorization.

3421689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140566.

The product of its digits is 10368, while the sum is 33.

The square root of 3421689 is about 1849.7807978244. The cubic root of 3421689 is about 150.6885236214.

The spelling of 3421689 in words is "three million, four hundred twenty-one thousand, six hundred eighty-nine".