797401993 has 2 divisors, whose sum is σ = 797401994. Its totient is φ = 797401992.

The previous prime is 797401961. The next prime is 797402027. The reversal of 797401993 is 399104797.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409981504 + 387420489 = 20248^2 + 19683^2 .

It is a cyclic number.

It is not a de Polignac number, because 797401993 - 2⁵ = 797401961 is a prime.

It is not a weakly prime, because it can be changed into another prime (797401093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398700996 + 398700997.

It is an arithmetic number, because the mean of its divisors is an integer number (398700997).

Almost surely, 2^797401993 is an apocalyptic number.

It is an amenable number.

797401993 is a deficient number, since it is larger than the sum of its proper divisors (1).

797401993 is an equidigital number, since it uses as much as digits as its factorization.

797401993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 797401993 is about 28238.3071907648. The cubic root of 797401993 is about 927.3117702512.

The spelling of 797401993 in words is "seven hundred ninety-seven million, four hundred one thousand, nine hundred ninety-three".