3556943 has 8 divisors (see below), whose sum is σ = 3855600. Its totient is φ = 3281304.

The previous prime is 3556939. The next prime is 3556951. The reversal of 3556943 is 3496553.

It is not a de Polignac number, because 3556943 - 2² = 3556939 is a prime.

It is a d-powerful number, because it can be written as 3⁷ + 5⁵ + 5⁹ + 6 + 9² + 4⁶ + 3¹³ .

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3556243) 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, 1388 + ... + 3006.

It is an arithmetic number, because the mean of its divisors is an integer number (481950).

Almost surely, 2^3556943 is an apocalyptic number.

3556943 is a deficient number, since it is larger than the sum of its proper divisors (298657).

3556943 is an equidigital number, since it uses as much as digits as its factorization.

3556943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658 (or 1632 counting only the distinct ones).

The product of its digits is 48600, while the sum is 35.

The square root of 3556943 is about 1885.9859490463. The cubic root of 3556943 is about 152.6484159347.

The spelling of 3556943 in words is "three million, five hundred fifty-six thousand, nine hundred forty-three".