3428989 has 8 divisors (see below), whose sum is σ = 3567960. Its totient is φ = 3291456.

The previous prime is 3428981. The next prime is 3429007. The reversal of 3428989 is 9898243.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 80089 + 3348900 = 283^2 + 1830^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3428989 - 2³ = 3428981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3428981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9007 + ... + 9379.

It is an arithmetic number, because the mean of its divisors is an integer number (445995).

Almost surely, 2^3428989 is an apocalyptic number.

It is an amenable number.

3428989 is a deficient number, since it is larger than the sum of its proper divisors (138971).

3428989 is a wasteful number, since it uses less digits than its factorization.

3428989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719.

The product of its digits is 124416, while the sum is 43.

The square root of 3428989 is about 1851.7529532851. The cubic root of 3428989 is about 150.7956096117.

The spelling of 3428989 in words is "three million, four hundred twenty-eight thousand, nine hundred eighty-nine".