798291805 has 4 divisors (see below), whose sum is σ = 957950172. Its totient is φ = 638633440.

The previous prime is 798291799. The next prime is 798291817. The reversal of 798291805 is 508192897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 508192897 = 29 ⋅17523893.

It can be written as a sum of positive squares in 2 ways, for example, as 95140516 + 703151289 = 9754^2 + 26517^2 .

It is not a de Polignac number, because 798291805 - 2¹⁵ = 798259037 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79829176 + ... + 79829185.

It is an arithmetic number, because the mean of its divisors is an integer number (239487543).

Almost surely, 2^798291805 is an apocalyptic number.

It is an amenable number.

798291805 is a deficient number, since it is larger than the sum of its proper divisors (159658367).

798291805 is a wasteful number, since it uses less digits than its factorization.

798291805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159658366.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 798291805 is about 28254.0582040881. The cubic root of 798291805 is about 927.6565676555.

The spelling of 798291805 in words is "seven hundred ninety-eight million, two hundred ninety-one thousand, eight hundred five".