4644508906 has 4 divisors (see below), whose sum is σ = 6966763362. Its totient is φ = 2322254452.

The previous prime is 4644508901. The next prime is 4644508927. The reversal of 4644508906 is 6098054464.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3601800225 + 1042708681 = 60015^2 + 32291^2 .

It is not an unprimeable number, because it can be changed into a prime (4644508901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1161127225 + ... + 1161127228.

Almost surely, 2^4644508906 is an apocalyptic number.

4644508906 is a deficient number, since it is larger than the sum of its proper divisors (2322254456).

4644508906 is a wasteful number, since it uses less digits than its factorization.

4644508906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322254455.

The product of its (nonzero) digits is 829440, while the sum is 46.

The square root of 4644508906 is about 68150.6339368901. The cubic root of 4644508906 is about 1668.4502704048.

The spelling of 4644508906 in words is "four billion, six hundred forty-four million, five hundred eight thousand, nine hundred six".