4290440 has 96 divisors (see below), whose sum is σ = 12312000. Its totient is φ = 1330560.

The previous prime is 4290437. The next prime is 4290449. The reversal of 4290440 is 440924.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4290449) 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, 21461 + ... + 21659.

It is an arithmetic number, because the mean of its divisors is an integer number (128250).

Almost surely, 2^4290440 is an apocalyptic number.

4290440 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 4290440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6156000).

4290440 is an abundant number, since it is smaller than the sum of its proper divisors (8021560).

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

4290440 is a wasteful number, since it uses less digits than its factorization.

4290440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 4290440 is about 2071.3377319983. The cubic root of 4290440 is about 162.4927334029.

The spelling of 4290440 in words is "four million, two hundred ninety thousand, four hundred forty".