798921 has 12 divisors (see below), whose sum is σ = 1194180. Its totient is φ = 514080.

The previous prime is 798911. The next prime is 798923. The reversal of 798921 is 129897.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 622521 + 176400 = 789^2 + 420^2 .

It is not a de Polignac number, because 798921 - 2⁹ = 798409 is a prime.

It is a super-3 number, since 3×798921³ = 1529793338766551883, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (798923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1270 + ... + 1791.

It is an arithmetic number, because the mean of its divisors is an integer number (99515).

2⁷⁹⁸⁹²¹ is an apocalyptic number.

It is an amenable number.

798921 is a deficient number, since it is larger than the sum of its proper divisors (395259).

798921 is a wasteful number, since it uses less digits than its factorization.

798921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096 (or 3093 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 798921 is about 893.8238081412. The cubic root of 798921 is about 92.7900222749.

The spelling of 798921 in words is "seven hundred ninety-eight thousand, nine hundred twenty-one".