797901999 has 16 divisors (see below), whose sum is σ = 1077118560. Its totient is φ = 525324800.

The previous prime is 797901983. The next prime is 797902009. The reversal of 797901999 is 999109797.

It is a cyclic number.

It is not a de Polignac number, because 797901999 - 2⁴ = 797901983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797901959) 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 in 15 ways as a sum of consecutive naturals, for example, 346219 + ... + 348515.

It is an arithmetic number, because the mean of its divisors is an integer number (67319910).

Almost surely, 2^797901999 is an apocalyptic number.

797901999 is a deficient number, since it is larger than the sum of its proper divisors (279216561).

797901999 is a wasteful number, since it uses less digits than its factorization.

797901999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690.

The product of its (nonzero) digits is 2893401, while the sum is 60.

The square root of 797901999 is about 28247.1591314950. The cubic root of 797901999 is about 927.5055514618.

The spelling of 797901999 in words is "seven hundred ninety-seven million, nine hundred one thousand, nine hundred ninety-nine".