791998 has 8 divisors (see below), whose sum is σ = 1191960. Its totient is φ = 394680.

The previous prime is 791993. The next prime is 792023. The reversal of 791998 is 899197.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791993) by changing a digit.

791998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493 + ... + 1351.

It is an arithmetic number, because the mean of its divisors is an integer number (148995).

2⁷⁹¹⁹⁹⁸ is an apocalyptic number.

791998 is a deficient number, since it is larger than the sum of its proper divisors (399962).

791998 is a wasteful number, since it uses less digits than its factorization.

791998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322.

The product of its digits is 40824, while the sum is 43.

The square root of 791998 is about 889.9426947843. The cubic root of 791998 is about 92.5212223037.

The spelling of 791998 in words is "seven hundred ninety-one thousand, nine hundred ninety-eight".