4040988 has 48 divisors (see below), whose sum is σ = 10940160. Its totient is φ = 1137024.

The previous prime is 4040963. The next prime is 4040989. The reversal of 4040988 is 8890404.

It is a super-2 number, since 2×4040988² = 32659168032288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5803 + ... + 6461.

It is an arithmetic number, because the mean of its divisors is an integer number (227920).

Almost surely, 2^4040988 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 4040988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5470080).

4040988 is an abundant number, since it is smaller than the sum of its proper divisors (6899172).

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

4040988 is a wasteful number, since it uses less digits than its factorization.

4040988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 4040988 is about 2010.2208833857. The cubic root of 4040988 is about 159.2804669686.

The spelling of 4040988 in words is "four million, forty thousand, nine hundred eighty-eight".