4259440 has 40 divisors (see below), whose sum is σ = 10177920. Its totient is φ = 1656576.

The previous prime is 4259419. The next prime is 4259459. The reversal of 4259440 is 449524.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×4259440² = 36285658227200, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4259399 and 4259408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2241 + ... + 3679.

It is an arithmetic number, because the mean of its divisors is an integer number (254448).

Almost surely, 2^4259440 is an apocalyptic number.

4259440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4259440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5088960).

4259440 is an abundant number, since it is smaller than the sum of its proper divisors (5918480).

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

4259440 is a wasteful number, since it uses less digits than its factorization.

4259440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489 (or 1483 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 4259440 is about 2063.8410791531. The cubic root of 4259440 is about 162.1004305371.

The spelling of 4259440 in words is "four million, two hundred fifty-nine thousand, four hundred forty".