916944409 has 8 divisors (see below), whose sum is σ = 928805472. Its totient is φ = 905102880.

The previous prime is 916944401. The next prime is 916944421. The reversal of 916944409 is 904449619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 916944409 - 2³ = 916944401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (916944401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105462 + ... + 113824.

It is an arithmetic number, because the mean of its divisors is an integer number (116100684).

Almost surely, 2^916944409 is an apocalyptic number.

It is an amenable number.

916944409 is a deficient number, since it is larger than the sum of its proper divisors (11861063).

916944409 is a wasteful number, since it uses less digits than its factorization.

916944409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9767.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 916944409 is about 30281.0899572654. The cubic root of 916944409 is about 971.5108806174.

The spelling of 916944409 in words is "nine hundred sixteen million, nine hundred forty-four thousand, four hundred nine".