797895440 has 40 divisors (see below), whose sum is σ = 1856975640. Its totient is φ = 318836736.

The previous prime is 797895437. The next prime is 797895451. The reversal of 797895440 is 44598797.

It can be written as a sum of positive squares in 4 ways, for example, as 52823824 + 745071616 = 7268^2 + 27296^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84896 + ... + 93824.

It is an arithmetic number, because the mean of its divisors is an integer number (46424391).

Almost surely, 2^797895440 is an apocalyptic number.

It is an amenable number.

797895440 is an abundant number, since it is smaller than the sum of its proper divisors (1059080200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

797895440 is a wasteful number, since it uses less digits than its factorization.

797895440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10059 (or 10053 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 53.

The square root of 797895440 is about 28247.0430310856. The cubic root of 797895440 is about 927.5030099945.

The spelling of 797895440 in words is "seven hundred ninety-seven million, eight hundred ninety-five thousand, four hundred forty".