4909640 has 16 divisors (see below), whose sum is σ = 11046780. Its totient is φ = 1963840.

The previous prime is 4909637. The next prime is 4909643. The reversal of 4909640 is 469094.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4909637) and next prime (4909643).

It can be written as a sum of positive squares in 2 ways, for example, as 4778596 + 131044 = 2186^2 + 362^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4909597 and 4909606.

It is not an unprimeable number, because it can be changed into a prime (4909643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61331 + ... + 61410.

Almost surely, 2^4909640 is an apocalyptic number.

4909640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4909640 is an abundant number, since it is smaller than the sum of its proper divisors (6137140).

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

4909640 is a wasteful number, since it uses less digits than its factorization.

4909640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122752 (or 122748 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 4909640 is about 2215.7707462642. The cubic root of 4909640 is about 169.9612368367.

The spelling of 4909640 in words is "four million, nine hundred nine thousand, six hundred forty".