4909644 has 18 divisors (see below), whose sum is σ = 12410580. Its totient is φ = 1636536.

The previous prime is 4909643. The next prime is 4909679. The reversal of 4909644 is 4469094.

4909644 is a `hidden beast` number, since 4 + 9 + 0 + 9 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 136379 = 4909644 / (4 + 9 + 0 + 9 + 6 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 4909599 and 4909608.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68154 + ... + 68225.

Almost surely, 2^4909644 is an apocalyptic number.

It is an amenable number.

4909644 is an abundant number, since it is smaller than the sum of its proper divisors (7500936).

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

4909644 is a wasteful number, since it uses less digits than its factorization.

4909644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136389 (or 136384 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 4909644 is about 2215.7716488844. The cubic root of 4909644 is about 169.9612829938.

The spelling of 4909644 in words is "four million, nine hundred nine thousand, six hundred forty-four".