797980905 has 48 divisors (see below), whose sum is σ = 1461133440. Its totient is φ = 401760000.

The previous prime is 797980903. The next prime is 797980919. The reversal of 797980905 is 509089797.

797980905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 797980905 - 2¹ = 797980903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (797980903) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 264405 + ... + 267405.

It is an arithmetic number, because the mean of its divisors is an integer number (30440280).

Almost surely, 2^797980905 is an apocalyptic number.

It is an amenable number.

797980905 is a deficient number, since it is larger than the sum of its proper divisors (663152535).

797980905 is a wasteful number, since it uses less digits than its factorization.

797980905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3342 (or 3339 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The square root of 797980905 is about 28248.5558037929. Note that the first 3 decimals coincide. The cubic root of 797980905 is about 927.5361246988.

The spelling of 797980905 in words is "seven hundred ninety-seven million, nine hundred eighty thousand, nine hundred five".