6403259 has 4 divisors (see below), whose sum is σ = 6552216. Its totient is φ = 6254304.

The previous prime is 6403219. The next prime is 6403273. The reversal of 6403259 is 9523046.

6403259 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6403259 - 2⁸ = 6403003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6403219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74414 + ... + 74499.

It is an arithmetic number, because the mean of its divisors is an integer number (1638054).

Almost surely, 2^6403259 is an apocalyptic number.

6403259 is a deficient number, since it is larger than the sum of its proper divisors (148957).

6403259 is a wasteful number, since it uses less digits than its factorization.

6403259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148956.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 6403259 is about 2530.4661625874. The cubic root of 6403259 is about 185.6950624510.

The spelling of 6403259 in words is "six million, four hundred three thousand, two hundred fifty-nine".