3543969 has 24 divisors (see below), whose sum is σ = 5600896. Its totient is φ = 1980000.

The previous prime is 3543959. The next prime is 3543979. The reversal of 3543969 is 9693453.

It is an interprime number because it is at equal distance from previous prime (3543959) and next prime (3543979).

It is not a de Polignac number, because 3543969 - 2¹¹ = 3541921 is a prime.

It is a super-2 number, since 2×3543969² = 25119432545922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

3543969 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3543919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4344 + ... + 5094.

Almost surely, 2^3543969 is an apocalyptic number.

3543969 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3543969 is a deficient number, since it is larger than the sum of its proper divisors (2056927).

3543969 is a wasteful number, since it uses less digits than its factorization.

3543969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789 (or 778 counting only the distinct ones).

The product of its digits is 87480, while the sum is 39.

The square root of 3543969 is about 1882.5432265953. The cubic root of 3543969 is about 152.4625940685.

The spelling of 3543969 in words is "three million, five hundred forty-three thousand, nine hundred sixty-nine".