916243440 has 320 divisors, whose sum is σ = 3410829312. Its totient is φ = 199065600.

The previous prime is 916243411. The next prime is 916243451. The reversal of 916243440 is 44342619.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3801720 + ... + 3801960.

Almost surely, 2^916243440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 916243440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1705414656).

916243440 is an abundant number, since it is smaller than the sum of its proper divisors (2494585872).

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

916243440 is a wasteful number, since it uses less digits than its factorization.

916243440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 916243440 is about 30269.5133756722. The cubic root of 916243440 is about 971.2632565120.

The spelling of 916243440 in words is "nine hundred sixteen million, two hundred forty-three thousand, four hundred forty".