4639408938 has 24 divisors (see below), whose sum is σ = 10053442308. Its totient is φ = 1546255872.

The previous prime is 4639408937. The next prime is 4639408957. The reversal of 4639408938 is 8398049364.

It is a happy number.

4639408938 is a `hidden beast` number, since 463 + 94 + 0 + 8 + 93 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4241526129 + 397882809 = 65127^2 + 19947^2 .

It is not an unprimeable number, because it can be changed into a prime (4639408937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168906 + ... + 194442.

Almost surely, 2^4639408938 is an apocalyptic number.

4639408938 is an abundant number, since it is smaller than the sum of its proper divisors (5414033370).

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

4639408938 is a wasteful number, since it uses less digits than its factorization.

4639408938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35638 (or 35635 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The square root of 4639408938 is about 68113.2067810641. The cubic root of 4639408938 is about 1667.8393583541.

It can be divided in two parts, 463940 and 8938, that added together give a triangular number (472878 = T₉₇₂).

The spelling of 4639408938 in words is "four billion, six hundred thirty-nine million, four hundred eight thousand, nine hundred thirty-eight".