4390732656 has 50 divisors (see below), whose sum is σ = 12708057912. Its totient is φ = 1463577120.

The previous prime is 4390732631. The next prime is 4390732669. The reversal of 4390732656 is 6562370934.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1692660 + ... + 1695251.

Almost surely, 2^4390732656 is an apocalyptic number.

It is an amenable number.

4390732656 is an abundant number, since it is smaller than the sum of its proper divisors (8317325256).

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

4390732656 is a wasteful number, since it uses less digits than its factorization.

4390732656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387931 (or 3387916 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 45.

The square root of 4390732656 is about 66262.6037520410. The cubic root of 4390732656 is about 1637.4912883090.

The spelling of 4390732656 in words is "four billion, three hundred ninety million, seven hundred thirty-two thousand, six hundred fifty-six".