3402989 has 2 divisors, whose sum is σ = 3402990. Its totient is φ = 3402988.

The previous prime is 3402979. The next prime is 3402991. The reversal of 3402989 is 9892043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2778889 + 624100 = 1667^2 + 790^2 .

It is a cyclic number.

It is not a de Polignac number, because 3402989 - 2⁸ = 3402733 is a prime.

Together with 3402991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3402929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1701494 + 1701495.

It is an arithmetic number, because the mean of its divisors is an integer number (1701495).

Almost surely, 2^3402989 is an apocalyptic number.

It is an amenable number.

3402989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3402989 is an equidigital number, since it uses as much as digits as its factorization.

3402989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 3402989 is about 1844.7192198272. The cubic root of 3402989 is about 150.4135108628.

The spelling of 3402989 in words is "three million, four hundred two thousand, nine hundred eighty-nine".