6442604399 has 8 divisors (see below), whose sum is σ = 8032338048. Its totient is φ = 5020211160.

The previous prime is 6442604381. The next prime is 6442604407. The reversal of 6442604399 is 9934062446.

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

It is a cyclic number.

It is not a de Polignac number, because 6442604399 - 2²⁰ = 6441555823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442604309) 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, 41835017 + ... + 41835170.

It is an arithmetic number, because the mean of its divisors is an integer number (1004042256).

Almost surely, 2^6442604399 is an apocalyptic number.

6442604399 is a deficient number, since it is larger than the sum of its proper divisors (1589733649).

6442604399 is a wasteful number, since it uses less digits than its factorization.

6442604399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83670205.

The product of its (nonzero) digits is 1119744, while the sum is 47.

The square root of 6442604399 is about 80265.8358144983. The cubic root of 6442604399 is about 1860.7462607482.

The spelling of 6442604399 in words is "six billion, four hundred forty-two million, six hundred four thousand, three hundred ninety-nine".