4138860444 has 12 divisors (see below), whose sum is σ = 9657341064. Its totient is φ = 1379620144.

The previous prime is 4138860413. The next prime is 4138860469. The reversal of 4138860444 is 4440688314.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 4138860396 and 4138860405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172452507 + ... + 172452530.

It is an arithmetic number, because the mean of its divisors is an integer number (804778422).

Almost surely, 2^4138860444 is an apocalyptic number.

It is an amenable number.

4138860444 is an abundant number, since it is smaller than the sum of its proper divisors (5518480620).

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

4138860444 is a wasteful number, since it uses less digits than its factorization.

4138860444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344905044 (or 344905042 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The square root of 4138860444 is about 64333.9758137176. The cubic root of 4138860444 is about 1605.5614336168.

The spelling of 4138860444 in words is "four billion, one hundred thirty-eight million, eight hundred sixty thousand, four hundred forty-four".