459023440 has 20 divisors (see below), whose sum is σ = 1067229684. Its totient is φ = 183609344.

The previous prime is 459023437. The next prime is 459023441. The reversal of 459023440 is 44320954.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 347002384 + 112021056 = 18628^2 + 10584^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (459023441) 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, 2868817 + ... + 2868976.

Almost surely, 2^459023440 is an apocalyptic number.

459023440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

459023440 is an abundant number, since it is smaller than the sum of its proper divisors (608206244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

459023440 is a wasteful number, since it uses less digits than its factorization.

459023440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5737806 (or 5737800 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 459023440 is about 21424.8323213975. The cubic root of 459023440 is about 771.3976078760.

The spelling of 459023440 in words is "four hundred fifty-nine million, twenty-three thousand, four hundred forty".