640093412 has 12 divisors (see below), whose sum is σ = 1280186880. Its totient is φ = 274325736.

The previous prime is 640093403. The next prime is 640093417. The reversal of 640093412 is 214390046.

640093412 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (640093417) 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 3 ways as a sum of consecutive naturals, for example, 11430212 + ... + 11430267.

It is an arithmetic number, because the mean of its divisors is an integer number (106682240).

Almost surely, 2^640093412 is an apocalyptic number.

It is an amenable number.

640093412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

640093412 is a wasteful number, since it uses less digits than its factorization.

640093412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22860490 (or 22860488 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 640093412 is about 25300.0674307402. The cubic root of 640093412 is about 861.8158010675.

The spelling of 640093412 in words is "six hundred forty million, ninety-three thousand, four hundred twelve".