4999440 has 80 divisors (see below), whose sum is σ = 15945408. Its totient is φ = 1294848.

The previous prime is 4999439. The next prime is 4999447. The reversal of 4999440 is 449994.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4999447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8599 + ... + 9161.

Almost surely, 2^4999440 is an apocalyptic number.

4999440 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 4999440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7972704).

4999440 is an abundant number, since it is smaller than the sum of its proper divisors (10945968).

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

4999440 is a wasteful number, since it uses less digits than its factorization.

4999440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 4999440 is about 2235.9427541867. The cubic root of 4999440 is about 170.9912105191.

The spelling of 4999440 in words is "four million, nine hundred ninety-nine thousand, four hundred forty".