797440081 has 4 divisors (see below), whose sum is σ = 803177200. Its totient is φ = 791702964.

The previous prime is 797440019. The next prime is 797440093. The reversal of 797440081 is 180044797.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 797440081 - 2⁷ = 797439953 is a prime.

It is a super-2 number, since 2×797440081² = 1271821365570573122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (797440181) 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 3 ways as a sum of consecutive naturals, for example, 2868351 + ... + 2868628.

It is an arithmetic number, because the mean of its divisors is an integer number (200794300).

Almost surely, 2^797440081 is an apocalyptic number.

It is an amenable number.

797440081 is a deficient number, since it is larger than the sum of its proper divisors (5737119).

797440081 is a wasteful number, since it uses less digits than its factorization.

797440081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5737118.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 797440081 is about 28238.9815857442. The cubic root of 797440081 is about 927.3265344014.

The spelling of 797440081 in words is "seven hundred ninety-seven million, four hundred forty thousand, eighty-one".