4249440 has 144 divisors (see below), whose sum is σ = 15685488. Its totient is φ = 1041408.

The previous prime is 4249433. The next prime is 4249447. The reversal of 4249440 is 449424.

It is an interprime number because it is at equal distance from previous prime (4249433) and next prime (4249447).

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4249447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18607 + ... + 18833.

It is an arithmetic number, because the mean of its divisors is an integer number (108927).

Almost surely, 2^4249440 is an apocalyptic number.

4249440 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 4249440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7842744).

4249440 is an abundant number, since it is smaller than the sum of its proper divisors (11436048).

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

4249440 is a wasteful number, since it uses less digits than its factorization.

4249440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 4249440 is about 2061.4169883844. The cubic root of 4249440 is about 161.9734753098.

The spelling of 4249440 in words is "four million, two hundred forty-nine thousand, four hundred forty".