4909440 has 64 divisors (see below), whose sum is σ = 15654960. Its totient is φ = 1308672.

The previous prime is 4909427. The next prime is 4909441. The reversal of 4909440 is 449094.

4909440 = T₁₀₄₀ + T₁₀₄₁ + ... + T₁₀₄₈.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×4909440² = 48205202227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4909398 and 4909407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4909441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642 + ... + 3198.

Almost surely, 2^4909440 is an apocalyptic number.

4909440 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 4909440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7827480).

4909440 is an abundant number, since it is smaller than the sum of its proper divisors (10745520).

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

4909440 is a wasteful number, since it uses less digits than its factorization.

4909440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579 (or 2567 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 4909440 is about 2215.7256147818. The cubic root of 4909440 is about 169.9589289479.

The spelling of 4909440 in words is "four million, nine hundred nine thousand, four hundred forty".