916009 has 8 divisors (see below), whose sum is σ = 991040. Its totient is φ = 843696.

The previous prime is 915991. The next prime is 916031. The reversal of 916009 is 900619.

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 916009 - 2⁷ = 915881 is a prime.

916009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (916049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52 + ... + 1354.

It is an arithmetic number, because the mean of its divisors is an integer number (123880).

2⁹¹⁶⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

916009 is a deficient number, since it is larger than the sum of its proper divisors (75031).

916009 is a wasteful number, since it uses less digits than its factorization.

916009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 916009 is about 957.0835909157. The cubic root of 916009 is about 97.1180410123.

The spelling of 916009 in words is "nine hundred sixteen thousand, nine".