916344505 has 4 divisors (see below), whose sum is σ = 1099613412. Its totient is φ = 733075600.

The previous prime is 916344503. The next prime is 916344511. The reversal of 916344505 is 505443619.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 396686889 + 519657616 = 19917^2 + 22796^2 .

It is not a de Polignac number, because 916344505 - 2¹ = 916344503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (916344503) 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, 91634446 + ... + 91634455.

It is an arithmetic number, because the mean of its divisors is an integer number (274903353).

Almost surely, 2^916344505 is an apocalyptic number.

It is an amenable number.

916344505 is a deficient number, since it is larger than the sum of its proper divisors (183268907).

916344505 is a wasteful number, since it uses less digits than its factorization.

916344505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183268906.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 916344505 is about 30271.1827486142. The cubic root of 916344505 is about 971.2989664947.

The spelling of 916344505 in words is "nine hundred sixteen million, three hundred forty-four thousand, five hundred five".