4139988 has 36 divisors (see below), whose sum is σ = 10009440. Its totient is φ = 1331760.

The previous prime is 4139983. The next prime is 4139999. The reversal of 4139988 is 8899314.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4139983) 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, 11353 + ... + 11711.

It is an arithmetic number, because the mean of its divisors is an integer number (278040).

Almost surely, 2^4139988 is an apocalyptic number.

It is an amenable number.

4139988 is an abundant number, since it is smaller than the sum of its proper divisors (5869452).

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

4139988 is a wasteful number, since it uses less digits than its factorization.

4139988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 395 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 4139988 is about 2034.6960460963. The cubic root of 4139988 is about 160.5707222220.

It can be divided in two parts, 413 and 9988, that added together give a palindrome (10401).

The spelling of 4139988 in words is "four million, one hundred thirty-nine thousand, nine hundred eighty-eight".