4010040 has 128 divisors (see below), whose sum is σ = 13824000. Its totient is φ = 1033344.

The previous prime is 4010029. The next prime is 4010047. The reversal of 4010040 is 400104.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4010047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50721 + ... + 50799.

It is an arithmetic number, because the mean of its divisors is an integer number (108000).

Almost surely, 2^4010040 is an apocalyptic number.

4010040 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 4010040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6912000).

4010040 is an abundant number, since it is smaller than the sum of its proper divisors (9813960).

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

4010040 is a wasteful number, since it uses less digits than its factorization.

4010040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 4010040 is about 2002.5084269486. The cubic root of 4010040 is about 158.8728067864.

Adding to 4010040 its reverse (400104), we get a palindrome (4410144).

The spelling of 4010040 in words is "four million, ten thousand, forty".