3403405 has 4 divisors (see below), whose sum is σ = 4084092. Its totient is φ = 2722720.

The previous prime is 3403403. The next prime is 3403409. The reversal of 3403405 is 5043043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5043043 = 127 ⋅39709.

It can be written as a sum of positive squares in 2 ways, for example, as 2399401 + 1004004 = 1549^2 + 1002^2 .

It is not a de Polignac number, because 3403405 - 2¹ = 3403403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3403403) 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, 340336 + ... + 340345.

It is an arithmetic number, because the mean of its divisors is an integer number (1021023).

Almost surely, 2^3403405 is an apocalyptic number.

It is an amenable number.

3403405 is a deficient number, since it is larger than the sum of its proper divisors (680687).

3403405 is an equidigital number, since it uses as much as digits as its factorization.

3403405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680686.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 3403405 is about 1844.8319706683. The cubic root of 3403405 is about 150.4196397366.

Adding to 3403405 its reverse (5043043), we get a palindrome (8446448).

The spelling of 3403405 in words is "three million, four hundred three thousand, four hundred five".