797440 has 72 divisors (see below), whose sum is σ = 2207520. Its totient is φ = 270336.

The previous prime is 797429. The next prime is 797473. The reversal of 797440 is 44797.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

797440 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8916 + ... + 9004.

It is an arithmetic number, because the mean of its divisors is an integer number (30660).

2⁷⁹⁷⁴⁴⁰ is an apocalyptic number.

797440 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 797440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1103760).

797440 is an abundant number, since it is smaller than the sum of its proper divisors (1410080).

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

797440 is an equidigital number, since it uses as much as digits as its factorization.

797440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 797440 is about 892.9949607921. The cubic root of 797440 is about 92.7326503004.

The spelling of 797440 in words is "seven hundred ninety-seven thousand, four hundred forty".