916299309 has 4 divisors (see below), whose sum is σ = 1221732416. Its totient is φ = 610866204.

The previous prime is 916299253. The next prime is 916299313. The reversal of 916299309 is 903992619.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 916299309 - 2⁸ = 916299053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916299409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152716549 + ... + 152716554.

It is an arithmetic number, because the mean of its divisors is an integer number (305433104).

Almost surely, 2^916299309 is an apocalyptic number.

It is an amenable number.

916299309 is a deficient number, since it is larger than the sum of its proper divisors (305433107).

916299309 is a wasteful number, since it uses less digits than its factorization.

916299309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305433106.

The product of its (nonzero) digits is 236196, while the sum is 48.

The square root of 916299309 is about 30270.4362208410. The cubic root of 916299309 is about 971.2829974097.

The spelling of 916299309 in words is "nine hundred sixteen million, two hundred ninety-nine thousand, three hundred nine".