4008487640 has 32 divisors (see below), whose sum is σ = 9073118880. Its totient is φ = 1593791232.

The previous prime is 4008487621. The next prime is 4008487673. The reversal of 4008487640 is 467848004.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293357 + ... + 306716.

It is an arithmetic number, because the mean of its divisors is an integer number (283534965).

Almost surely, 2^4008487640 is an apocalyptic number.

4008487640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4008487640 is an abundant number, since it is smaller than the sum of its proper divisors (5064631240).

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

4008487640 is a wasteful number, since it uses less digits than its factorization.

4008487640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600251 (or 600247 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 4008487640 is about 63312.6183315775. The cubic root of 4008487640 is about 1588.5230328166.

The spelling of 4008487640 in words is "four billion, eight million, four hundred eighty-seven thousand, six hundred forty".