6404369 has 2 divisors, whose sum is σ = 6404370. Its totient is φ = 6404368.

The previous prime is 6404357. The next prime is 6404381. The reversal of 6404369 is 9634046.

It is a balanced prime because it is at equal distance from previous prime (6404357) and next prime (6404381).

It can be written as a sum of positive squares in only one way, i.e., 4048144 + 2356225 = 2012^2 + 1535^2 .

It is a cyclic number.

It is not a de Polignac number, because 6404369 - 2⁴ = 6404353 is a prime.

It is a super-2 number, since 2×6404369² = 82031884576322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6404269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3202184 + 3202185.

It is an arithmetic number, because the mean of its divisors is an integer number (3202185).

Almost surely, 2^6404369 is an apocalyptic number.

It is an amenable number.

6404369 is a deficient number, since it is larger than the sum of its proper divisors (1).

6404369 is an equidigital number, since it uses as much as digits as its factorization.

6404369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 6404369 is about 2530.6854802602. The cubic root of 6404369 is about 185.7057918629.

The spelling of 6404369 in words is "six million, four hundred four thousand, three hundred sixty-nine".