791214649 has 2 divisors, whose sum is σ = 791214650. Its totient is φ = 791214648.

The previous prime is 791214631. The next prime is 791214653. The reversal of 791214649 is 946412197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 790734400 + 480249 = 28120^2 + 693^2 .

It is a cyclic number.

It is not a de Polignac number, because 791214649 - 2⁵ = 791214617 is a prime.

It is not a weakly prime, because it can be changed into another prime (791214659) 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, 395607324 + 395607325.

It is an arithmetic number, because the mean of its divisors is an integer number (395607325).

Almost surely, 2^791214649 is an apocalyptic number.

It is an amenable number.

791214649 is a deficient number, since it is larger than the sum of its proper divisors (1).

791214649 is an equidigital number, since it uses as much as digits as its factorization.

791214649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 791214649 is about 28128.5379819144. The cubic root of 791214649 is about 924.9070854810.

The spelling of 791214649 in words is "seven hundred ninety-one million, two hundred fourteen thousand, six hundred forty-nine".