3440556 has 120 divisors (see below), whose sum is σ = 10814496. Its totient is φ = 933120.

The previous prime is 3440551. The next prime is 3440561. The reversal of 3440556 is 6550443.

It is an interprime number because it is at equal distance from previous prime (3440551) and next prime (3440561).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440551) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 83896 + ... + 83936.

Almost surely, 2^3440556 is an apocalyptic number.

3440556 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3440556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5407248).

3440556 is an abundant number, since it is smaller than the sum of its proper divisors (7373940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3440556 is a wasteful number, since it uses less digits than its factorization.

3440556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 3440556 is about 1854.8735805979. The cubic root of 3440556 is about 150.9649787940.

Adding to 3440556 its reverse (6550443), we get a palindrome (9990999).

The spelling of 3440556 in words is "three million, four hundred forty thousand, five hundred fifty-six".