6400469459 has 4 divisors (see below), whose sum is σ = 6403164504. Its totient is φ = 6397774416.

The previous prime is 6400469431. The next prime is 6400469497. The reversal of 6400469459 is 9549640046.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6400469459 - 2¹⁶ = 6400403923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6400469429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1343957 + ... + 1348710.

It is an arithmetic number, because the mean of its divisors is an integer number (1600791126).

Almost surely, 2^6400469459 is an apocalyptic number.

6400469459 is a deficient number, since it is larger than the sum of its proper divisors (2695045).

6400469459 is a wasteful number, since it uses less digits than its factorization.

6400469459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695044.

The product of its (nonzero) digits is 933120, while the sum is 47.

The square root of 6400469459 is about 80002.9340649454. The cubic root of 6400469459 is about 1856.6809289113.

The spelling of 6400469459 in words is "six billion, four hundred million, four hundred sixty-nine thousand, four hundred fifty-nine".