4494040 has 32 divisors (see below), whose sum is σ = 10172880. Its totient is φ = 1786752.

The previous prime is 4494019. The next prime is 4494067. The reversal of 4494040 is 404944.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4493996 and 4494014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11122 + ... + 11518.

Almost surely, 2^4494040 is an apocalyptic number.

4494040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4494040 is an abundant number, since it is smaller than the sum of its proper divisors (5678840).

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

4494040 is a wasteful number, since it uses less digits than its factorization.

4494040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 4494040 is about 2119.9150926393. The cubic root of 4494040 is about 165.0234432561.

Adding to 4494040 its reverse (404944), we get a palindrome (4898984).

It can be divided in two parts, 449 and 4040, that added together give a square (4489 = 67²).

The spelling of 4494040 in words is "four million, four hundred ninety-four thousand, forty".