4139688 has 64 divisors (see below), whose sum is σ = 12136320. Its totient is φ = 1152000.

The previous prime is 4139677. The next prime is 4139699. The reversal of 4139688 is 8869314.

It is an interprime number because it is at equal distance from previous prime (4139677) and next prime (4139699).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6588 + ... + 7188.

It is an arithmetic number, because the mean of its divisors is an integer number (189630).

Almost surely, 2^4139688 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 4139688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6068160).

4139688 is an abundant number, since it is smaller than the sum of its proper divisors (7996632).

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

4139688 is a wasteful number, since it uses less digits than its factorization.

4139688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 654 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 4139688 is about 2034.6223236758. The cubic root of 4139688 is about 160.5668435972.

It can be divided in two parts, 413 and 9688, that added together give a palindrome (10101).

The spelling of 4139688 in words is "four million, one hundred thirty-nine thousand, six hundred eighty-eight".