6405941 has 2 divisors, whose sum is σ = 6405942. Its totient is φ = 6405940.

The previous prime is 6405929. The next prime is 6405943. The reversal of 6405941 is 1495046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6400900 + 5041 = 2530^2 + 71^2 .

It is a cyclic number.

It is not a de Polignac number, because 6405941 - 2⁶ = 6405877 is a prime.

Together with 6405943, 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 (6405943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3202970 + 3202971.

It is an arithmetic number, because the mean of its divisors is an integer number (3202971).

Almost surely, 2^6405941 is an apocalyptic number.

It is an amenable number.

6405941 is a deficient number, since it is larger than the sum of its proper divisors (1).

6405941 is an equidigital number, since it uses as much as digits as its factorization.

6405941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 6405941 is about 2530.9960489894. The cubic root of 6405941 is about 185.7209849091.

The spelling of 6405941 in words is "six million, four hundred five thousand, nine hundred forty-one".