794515021 has 2 divisors, whose sum is σ = 794515022. Its totient is φ = 794515020.

The previous prime is 794515003. The next prime is 794515081. The reversal of 794515021 is 120515497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 545222500 + 249292521 = 23350^2 + 15789^2 .

It is a cyclic number.

It is not a de Polignac number, because 794515021 - 2⁷ = 794514893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (794515081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 397257510 + 397257511.

It is an arithmetic number, because the mean of its divisors is an integer number (397257511).

Almost surely, 2^794515021 is an apocalyptic number.

It is an amenable number.

794515021 is a deficient number, since it is larger than the sum of its proper divisors (1).

794515021 is an equidigital number, since it uses as much as digits as its factorization.

794515021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 794515021 is about 28187.1428314400. The cubic root of 794515021 is about 926.1913147091.

The spelling of 794515021 in words is "seven hundred ninety-four million, five hundred fifteen thousand, twenty-one".