6445035421 has 4 divisors (see below), whose sum is σ = 7030947744. Its totient is φ = 5859123100.

The previous prime is 6445035419. The next prime is 6445035473. The reversal of 6445035421 is 1245305446.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6445035421 - 2¹ = 6445035419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445032421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292956145 + ... + 292956166.

It is an arithmetic number, because the mean of its divisors is an integer number (1757736936).

Almost surely, 2^6445035421 is an apocalyptic number.

It is an amenable number.

6445035421 is a deficient number, since it is larger than the sum of its proper divisors (585912323).

6445035421 is a wasteful number, since it uses less digits than its factorization.

6445035421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585912322.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 6445035421 is about 80280.9779524390. The cubic root of 6445035421 is about 1860.9802730604.

The spelling of 6445035421 in words is "six billion, four hundred forty-five million, thirty-five thousand, four hundred twenty-one".