916491400 has 96 divisors (see below), whose sum is σ = 2331770400. Its totient is φ = 332236800.

The previous prime is 916491397. The next prime is 916491413. The reversal of 916491400 is 4194619.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1361464 + ... + 1362136.

It is an arithmetic number, because the mean of its divisors is an integer number (24289275).

Almost surely, 2^916491400 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 916491400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1165885200).

916491400 is an abundant number, since it is smaller than the sum of its proper divisors (1415279000).

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

916491400 is a wasteful number, since it uses less digits than its factorization.

916491400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 916491400 is about 30273.6089688692. The cubic root of 916491400 is about 971.3508652211.

The spelling of 916491400 in words is "nine hundred sixteen million, four hundred ninety-one thousand, four hundred".