3401605421 has 2 divisors, whose sum is σ = 3401605422. Its totient is φ = 3401605420.

The previous prime is 3401605367. The next prime is 3401605423. The reversal of 3401605421 is 1245061043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1713546025 + 1688059396 = 41395^2 + 41086^2 .

It is an emirp because it is prime and its reverse (1245061043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3401605421 - 2³⁰ = 2327863597 is a prime.

Together with 3401605423, 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 (3401605423) 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, 1700802710 + 1700802711.

It is an arithmetic number, because the mean of its divisors is an integer number (1700802711).

Almost surely, 2^3401605421 is an apocalyptic number.

It is an amenable number.

3401605421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3401605421 is an equidigital number, since it uses as much as digits as its factorization.

3401605421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 3401605421 is about 58323.2836952790. The cubic root of 3401605421 is about 1503.9312317954.

Adding to 3401605421 its reverse (1245061043), we get a palindrome (4646666464).

The spelling of 3401605421 in words is "three billion, four hundred one million, six hundred five thousand, four hundred twenty-one".