3400385 has 4 divisors (see below), whose sum is σ = 4080468. Its totient is φ = 2720304.

The previous prime is 3400379. The next prime is 3400393. The reversal of 3400385 is 5830043.

3400385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5830043 = 967 ⋅6029.

It can be written as a sum of positive squares in 2 ways, for example, as 1236544 + 2163841 = 1112^2 + 1471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3400385 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3400385.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340034 + ... + 340043.

It is an arithmetic number, because the mean of its divisors is an integer number (1020117).

Almost surely, 2^3400385 is an apocalyptic number.

It is an amenable number.

3400385 is a deficient number, since it is larger than the sum of its proper divisors (680083).

3400385 is an equidigital number, since it uses as much as digits as its factorization.

3400385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680082.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 3400385 is about 1844.0132862862. The cubic root of 3400385 is about 150.3751351163.

It can be divided in two parts, 340038 and 5, that added together give a palindrome (340043).

The spelling of 3400385 in words is "three million, four hundred thousand, three hundred eighty-five".