3402439 has 2 divisors, whose sum is σ = 3402440. Its totient is φ = 3402438.

The previous prime is 3402437. The next prime is 3402473. The reversal of 3402439 is 9342043.

It is a weak prime.

It is an emirp because it is prime and its reverse (9342043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3402439 - 2¹ = 3402437 is a prime.

It is a super-2 number, since 2×3402439² = 23153182297442, which contains 22 as substring.

Together with 3402437, it forms a pair of twin primes.

3402439 is a modest number, since divided by 2439 gives 34 as remainder.

It is equal to p₂₄₃₇₀₉ and since 3402439 and 243709 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3402437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1701219 + 1701220.

It is an arithmetic number, because the mean of its divisors is an integer number (1701220).

Almost surely, 2^3402439 is an apocalyptic number.

3402439 is a deficient number, since it is larger than the sum of its proper divisors (1).

3402439 is an equidigital number, since it uses as much as digits as its factorization.

3402439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 3402439 is about 1844.5701396260. The cubic root of 3402439 is about 150.4054070176.

The spelling of 3402439 in words is "three million, four hundred two thousand, four hundred thirty-nine".