3405289 has 2 divisors, whose sum is σ = 3405290. Its totient is φ = 3405288.

The previous prime is 3405277. The next prime is 3405293. The reversal of 3405289 is 9825043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1946025 + 1459264 = 1395^2 + 1208^2 .

It is a cyclic number.

It is not a de Polignac number, because 3405289 - 2²¹ = 1308137 is a prime.

3405289 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3405289.

It is not a weakly prime, because it can be changed into another prime (3405889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1702644 + 1702645.

It is an arithmetic number, because the mean of its divisors is an integer number (1702645).

Almost surely, 2^3405289 is an apocalyptic number.

It is an amenable number.

3405289 is a deficient number, since it is larger than the sum of its proper divisors (1).

3405289 is an equidigital number, since it uses as much as digits as its factorization.

3405289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 3405289 is about 1845.3425156323. The cubic root of 3405289 is about 150.4473902126.

Subtracting from 3405289 its product of nonzero digits (8640), we obtain a square (3396649 = 1843²).

The spelling of 3405289 in words is "three million, four hundred five thousand, two hundred eighty-nine".