3420989 has 16 divisors (see below), whose sum is σ = 4112640. Its totient is φ = 2804160.

The previous prime is 3420973. The next prime is 3421003. The reversal of 3420989 is 9890243.

It is a cyclic number.

It is not a de Polignac number, because 3420989 - 2⁴ = 3420973 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 (3420919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6467 + ... + 6975.

It is an arithmetic number, because the mean of its divisors is an integer number (257040).

Almost surely, 2^3420989 is an apocalyptic number.

It is an amenable number.

3420989 is a deficient number, since it is larger than the sum of its proper divisors (691651).

3420989 is a wasteful number, since it uses less digits than its factorization.

3420989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 3420989 is about 1849.5915765379. The cubic root of 3420989 is about 150.6782471020.

The spelling of 3420989 in words is "three million, four hundred twenty thousand, nine hundred eighty-nine".