4050040 has 48 divisors (see below), whose sum is σ = 9725400. Its totient is φ = 1513728.

The previous prime is 4050031. The next prime is 4050049. The reversal of 4050040 is 400504.

It is an interprime number because it is at equal distance from previous prime (4050031) and next prime (4050049).

It is a self number, because there is not a number n which added to its sum of digits gives 4050040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4050049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55444 + ... + 55516.

Almost surely, 2^4050040 is an apocalyptic number.

4050040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4050040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4862700).

4050040 is an abundant number, since it is smaller than the sum of its proper divisors (5675360).

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

4050040 is a wasteful number, since it uses less digits than its factorization.

4050040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 4050040 is about 2012.4711178052. The cubic root of 4050040 is about 159.3993101453.

Adding to 4050040 its reverse (400504), we get a palindrome (4450544).

The spelling of 4050040 in words is "four million, fifty thousand, forty", and thus it is an eban number.