3402649 has 2 divisors, whose sum is σ = 3402650. Its totient is φ = 3402648.

The previous prime is 3402647. The next prime is 3402671. The reversal of 3402649 is 9462043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3080025 + 322624 = 1755^2 + 568^2 .

It is a cyclic number.

It is not a de Polignac number, because 3402649 - 2¹ = 3402647 is a prime.

Together with 3402647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3402647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1701324 + 1701325.

It is an arithmetic number, because the mean of its divisors is an integer number (1701325).

Almost surely, 2^3402649 is an apocalyptic number.

It is an amenable number.

3402649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3402649 is an equidigital number, since it uses as much as digits as its factorization.

3402649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 3402649 is about 1844.6270625793. The cubic root of 3402649 is about 150.4085013161.

The spelling of 3402649 in words is "three million, four hundred two thousand, six hundred forty-nine".