3440005 has 8 divisors (see below), whose sum is σ = 4140792. Its totient is φ = 2743488.

The previous prime is 3439999. The next prime is 3440011. The reversal of 3440005 is 5000443.

It is an interprime number because it is at equal distance from previous prime (3439999) and next prime (3440011).

It can be written as a sum of positive squares in 4 ways, for example, as 474721 + 2965284 = 689^2 + 1722^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3440005 - 2¹¹ = 3437957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1119 + ... + 2851.

It is an arithmetic number, because the mean of its divisors is an integer number (517599).

Almost surely, 2^3440005 is an apocalyptic number.

It is an amenable number.

3440005 is a deficient number, since it is larger than the sum of its proper divisors (700787).

3440005 is a wasteful number, since it uses less digits than its factorization.

3440005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 3440005 is about 1854.7250470083. The cubic root of 3440005 is about 150.9569194237.

Adding to 3440005 its reverse (5000443), we get a palindrome (8440448).

The spelling of 3440005 in words is "three million, four hundred forty thousand, five".