916679381 has 2 divisors, whose sum is σ = 916679382. Its totient is φ = 916679380.

The previous prime is 916679363. The next prime is 916679411. The reversal of 916679381 is 183976619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 872257156 + 44422225 = 29534^2 + 6665^2 .

It is an emirp because it is prime and its reverse (183976619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 916679381 - 2⁶ = 916679317 is a prime.

It is a super-2 number, since 2×916679381² = 1680602175101086322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (916679081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458339690 + 458339691.

It is an arithmetic number, because the mean of its divisors is an integer number (458339691).

Almost surely, 2^916679381 is an apocalyptic number.

It is an amenable number.

916679381 is a deficient number, since it is larger than the sum of its proper divisors (1).

916679381 is an equidigital number, since it uses as much as digits as its factorization.

916679381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 50.

The square root of 916679381 is about 30276.7135105513. The cubic root of 916679381 is about 971.4172717451.

The spelling of 916679381 in words is "nine hundred sixteen million, six hundred seventy-nine thousand, three hundred eighty-one".