4040003640 has 32 divisors (see below), whose sum is σ = 12120011280. Its totient is φ = 1077334272.

The previous prime is 4040003633. The next prime is 4040003651. The reversal of 4040003640 is 463000404.

It is a super-2 number, since 2×4040003640² = 32643258822426499200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16833229 + ... + 16833468.

Almost surely, 2^4040003640 is an apocalyptic number.

4040003640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4040003640 is an abundant number, since it is smaller than the sum of its proper divisors (8080007640).

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

4040003640 is a wasteful number, since it uses less digits than its factorization.

4040003640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33666711 (or 33666707 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 4040003640 is about 63561.0229621897. The cubic root of 4040003640 is about 1592.6753266858.

The spelling of 4040003640 in words is "four billion, forty million, three thousand, six hundred forty".