3406989 has 4 divisors (see below), whose sum is σ = 4542656. Its totient is φ = 2271324.

The previous prime is 3406981. The next prime is 3407003. The reversal of 3406989 is 9896043.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9896043 = 3 ⋅3298681.

It is not a de Polignac number, because 3406989 - 2³ = 3406981 is a prime.

It is a super-2 number, since 2×3406989² = 23215148092242, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3406981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567829 + ... + 567834.

It is an arithmetic number, because the mean of its divisors is an integer number (1135664).

Almost surely, 2^3406989 is an apocalyptic number.

It is an amenable number.

3406989 is a deficient number, since it is larger than the sum of its proper divisors (1135667).

3406989 is a wasteful number, since it uses less digits than its factorization.

3406989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135666.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 3406989 is about 1845.8030772539. The cubic root of 3406989 is about 150.4724216675.

The spelling of 3406989 in words is "three million, four hundred six thousand, nine hundred eighty-nine".