797578099 has 2 divisors, whose sum is σ = 797578100. Its totient is φ = 797578098.

The previous prime is 797578091. The next prime is 797578127. The reversal of 797578099 is 990875797.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 797578099 - 2³ = 797578091 is a prime.

It is a super-2 number, since 2×797578099² = 1272261648008907602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (797578091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398789049 + 398789050.

It is an arithmetic number, because the mean of its divisors is an integer number (398789050).

Almost surely, 2^797578099 is an apocalyptic number.

797578099 is a deficient number, since it is larger than the sum of its proper divisors (1).

797578099 is an equidigital number, since it uses as much as digits as its factorization.

797578099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10001880, while the sum is 61.

The square root of 797578099 is about 28241.4252296162. The cubic root of 797578099 is about 927.3800307386.

The spelling of 797578099 in words is "seven hundred ninety-seven million, five hundred seventy-eight thousand, ninety-nine".