4323994640 has 80 divisors (see below), whose sum is σ = 11800054272. Its totient is φ = 1442437632.

The previous prime is 4323994637. The next prime is 4323994657. The reversal of 4323994640 is 464993234.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 4323994591 and 4323994600.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 83624 + ... + 125063.

Almost surely, 2^4323994640 is an apocalyptic number.

4323994640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4323994640 is an abundant number, since it is smaller than the sum of its proper divisors (7476059632).

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

4323994640 is a wasteful number, since it uses less digits than its factorization.

4323994640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208744 (or 208738 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 44.

The square root of 4323994640 is about 65757.0881350444. The cubic root of 4323994640 is about 1629.1524116581.

The spelling of 4323994640 in words is "four billion, three hundred twenty-three million, nine hundred ninety-four thousand, six hundred forty".