4434640 has 40 divisors (see below), whose sum is σ = 11784960. Its totient is φ = 1520256.

The previous prime is 4434631. The next prime is 4434673. The reversal of 4434640 is 464344.

It is a happy number.

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

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, 3400 + ... + 4519.

It is an arithmetic number, because the mean of its divisors is an integer number (294624).

Almost surely, 2^4434640 is an apocalyptic number.

4434640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4434640 is an abundant number, since it is smaller than the sum of its proper divisors (7350320).

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

4434640 is a wasteful number, since it uses less digits than its factorization.

4434640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7939 (or 7933 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 4434640 is about 2105.8584947712. The cubic root of 4434640 is about 164.2931500820.

Adding to 4434640 its reverse (464344), we get a palindrome (4898984).

The spelling of 4434640 in words is "four million, four hundred thirty-four thousand, six hundred forty".