6404340369 has 8 divisors (see below), whose sum is σ = 9758994880. Its totient is φ = 3659623056.

The previous prime is 6404340353. The next prime is 6404340377. The reversal of 6404340369 is 9630434046.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6404340369 - 2⁴ = 6404340353 is a prime.

It is a super-2 number, since 2×6404340369² = 82031151124006112322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6404340169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152484274 + ... + 152484315.

It is an arithmetic number, because the mean of its divisors is an integer number (1219874360).

Almost surely, 2^6404340369 is an apocalyptic number.

It is an amenable number.

6404340369 is a deficient number, since it is larger than the sum of its proper divisors (3354654511).

6404340369 is a wasteful number, since it uses less digits than its factorization.

6404340369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304968599.

The product of its (nonzero) digits is 186624, while the sum is 39.

The square root of 6404340369 is about 80027.1227084918. The cubic root of 6404340369 is about 1857.0551512728.

The spelling of 6404340369 in words is "six billion, four hundred four million, three hundred forty thousand, three hundred sixty-nine".