3649441 has 4 divisors (see below), whose sum is σ = 3864132. Its totient is φ = 3434752.

The previous prime is 3649417. The next prime is 3649469. The reversal of 3649441 is 1449463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1449463 = 1109 ⋅1307.

It can be written as a sum of positive squares in 2 ways, for example, as 1745041 + 1904400 = 1321^2 + 1380^2 .

It is a cyclic number.

It is not a de Polignac number, because 3649441 - 2⁷ = 3649313 is a prime.

It is a super-2 number, since 2×3649441² = 26636839224962, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3649411) 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, 107320 + ... + 107353.

It is an arithmetic number, because the mean of its divisors is an integer number (966033).

Almost surely, 2^3649441 is an apocalyptic number.

It is an amenable number.

3649441 is a deficient number, since it is larger than the sum of its proper divisors (214691).

3649441 is a wasteful number, since it uses less digits than its factorization.

3649441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214690.

The product of its digits is 10368, while the sum is 31.

The square root of 3649441 is about 1910.3510148661. The cubic root of 3649441 is about 153.9603119181.

The spelling of 3649441 in words is "three million, six hundred forty-nine thousand, four hundred forty-one".