6400053329 has 4 divisors (see below), whose sum is σ = 6405058560. Its totient is φ = 6395048100.

The previous prime is 6400053313. The next prime is 6400053349. The reversal of 6400053329 is 9233500046.

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 6400053329 - 2⁴ = 6400053313 is a prime.

It is a super-2 number, since 2×6400053329² = 81921365228087964482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6400053295 and 6400053304.

It is not an unprimeable number, because it can be changed into a prime (6400053349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2500697 + ... + 2503254.

It is an arithmetic number, because the mean of its divisors is an integer number (1601264640).

Almost surely, 2^6400053329 is an apocalyptic number.

It is an amenable number.

6400053329 is a deficient number, since it is larger than the sum of its proper divisors (5005231).

6400053329 is a wasteful number, since it uses less digits than its factorization.

6400053329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005230.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 6400053329 is about 80000.3333055557. Note that the first 4 decimals coincide. The cubic root of 6400053329 is about 1856.6406903327.

The spelling of 6400053329 in words is "six billion, four hundred million, fifty-three thousand, three hundred twenty-nine".