8198401 has 4 divisors (see below), whose sum is σ = 8398404. Its totient is φ = 7998400.

The previous prime is 8198389. The next prime is 8198459. The reversal of 8198401 is 1048918.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4198401 + 4000000 = 2049^2 + 2000^2 .

It is a cyclic number.

It is not a de Polignac number, because 8198401 - 2¹⁷ = 8067329 is a prime.

It is a Duffinian number.

8198401 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8198501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99940 + ... + 100021.

It is an arithmetic number, because the mean of its divisors is an integer number (2099601).

Almost surely, 2^8198401 is an apocalyptic number.

8198401 is the 1281-st centered decagonal number.

It is an amenable number.

8198401 is a deficient number, since it is larger than the sum of its proper divisors (200003).

8198401 is a wasteful number, since it uses less digits than its factorization.

8198401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200002.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 8198401 is about 2863.2850015323. The cubic root of 8198401 is about 201.6398592268.

The spelling of 8198401 in words is "eight million, one hundred ninety-eight thousand, four hundred one".