3402389 has 2 divisors, whose sum is σ = 3402390. Its totient is φ = 3402388.

The previous prime is 3402383. The next prime is 3402403. The reversal of 3402389 is 9832043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3062500 + 339889 = 1750^2 + 583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3402389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3402383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1701194 + 1701195.

It is an arithmetic number, because the mean of its divisors is an integer number (1701195).

Almost surely, 2^3402389 is an apocalyptic number.

It is an amenable number.

3402389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3402389 is an equidigital number, since it uses as much as digits as its factorization.

3402389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 3402389 is about 1844.5565862830. The cubic root of 3402389 is about 150.4046702611.

The spelling of 3402389 in words is "three million, four hundred two thousand, three hundred eighty-nine".