916448857 has 2 divisors, whose sum is σ = 916448858. Its totient is φ = 916448856.

The previous prime is 916448849. The next prime is 916448879. The reversal of 916448857 is 758844619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 866478096 + 49970761 = 29436^2 + 7069^2 .

It is a cyclic number.

It is not a de Polignac number, because 916448857 - 2³ = 916448849 is a prime.

It is not a weakly prime, because it can be changed into another prime (916448557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458224428 + 458224429.

It is an arithmetic number, because the mean of its divisors is an integer number (458224429).

Almost surely, 2^916448857 is an apocalyptic number.

It is an amenable number.

916448857 is a deficient number, since it is larger than the sum of its proper divisors (1).

916448857 is an equidigital number, since it uses as much as digits as its factorization.

916448857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 52.

The square root of 916448857 is about 30272.9063190173. The cubic root of 916448857 is about 971.3358351404.

The spelling of 916448857 in words is "nine hundred sixteen million, four hundred forty-eight thousand, eight hundred fifty-seven".