4639908 has 72 divisors (see below), whose sum is σ = 13585152. Its totient is φ = 1221696.

The previous prime is 4639903. The next prime is 4639909. The reversal of 4639908 is 8099364.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (4639903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7341 + ... + 7947.

Almost surely, 2^4639908 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4639908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6792576).

4639908 is an abundant number, since it is smaller than the sum of its proper divisors (8945244).

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

4639908 is a wasteful number, since it uses less digits than its factorization.

4639908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 632 counting only the distinct ones).

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

The square root of 4639908 is about 2154.0445677841. The cubic root of 4639908 is about 166.7899159463.

The spelling of 4639908 in words is "four million, six hundred thirty-nine thousand, nine hundred eight".