4040408520 has 128 divisors (see below), whose sum is σ = 14176944000. Its totient is φ = 1020729600.

The previous prime is 4040408507. The next prime is 4040408549. The reversal of 4040408520 is 258040404.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77931 + ... + 118970.

It is an arithmetic number, because the mean of its divisors is an integer number (110757375).

Almost surely, 2^4040408520 is an apocalyptic number.

4040408520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4040408520 is an abundant number, since it is smaller than the sum of its proper divisors (10136535480).

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

4040408520 is a wasteful number, since it uses less digits than its factorization.

4040408520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196940 (or 196930 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 4040408520 is about 63564.2078531621. The cubic root of 4040408520 is about 1592.7285296780.

Adding to 4040408520 its reverse (258040404), we get a palindrome (4298448924).

The spelling of 4040408520 in words is "four billion, forty million, four hundred eight thousand, five hundred twenty".