3440641 has 4 divisors (see below), whose sum is σ = 3444400. Its totient is φ = 3436884.

The previous prime is 3440627. The next prime is 3440663. The reversal of 3440641 is 1460443.

It is a happy number.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1460443 = 107 ⋅13649.

It is a cyclic number.

It is not a de Polignac number, because 3440641 - 2⁵ = 3440609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3440621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490 + ... + 2668.

It is an arithmetic number, because the mean of its divisors is an integer number (861100).

It is a Proth number, since it is equal to 105 ⋅ 2¹⁵ + 1 and 105 < 2¹⁵.

Almost surely, 2^3440641 is an apocalyptic number.

It is an amenable number.

3440641 is a deficient number, since it is larger than the sum of its proper divisors (3759).

3440641 is a wasteful number, since it uses less digits than its factorization.

3440641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3758.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 3440641 is about 1854.8964930691. The cubic root of 3440641 is about 150.9662219959.

The spelling of 3440641 in words is "three million, four hundred forty thousand, six hundred forty-one".