916649 has 2 divisors, whose sum is σ = 916650. Its totient is φ = 916648.

The previous prime is 916633. The next prime is 916651. The reversal of 916649 is 946619.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 912025 + 4624 = 955^2 + 68^2 .

It is a cyclic number.

It is not a de Polignac number, because 916649 - 2⁴ = 916633 is a prime.

Together with 916651, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 916649.

It is not a weakly prime, because it can be changed into another prime (916679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458324 + 458325.

It is an arithmetic number, because the mean of its divisors is an integer number (458325).

2⁹¹⁶⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

916649 is a deficient number, since it is larger than the sum of its proper divisors (1).

916649 is an equidigital number, since it uses as much as digits as its factorization.

916649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 916649 is about 957.4178815961. The cubic root of 916649 is about 97.1406539911.

The spelling of 916649 in words is "nine hundred sixteen thousand, six hundred forty-nine".