998203801 has 4 divisors (see below), whose sum is σ = 1140804352. Its totient is φ = 855603252.

The previous prime is 998203799. The next prime is 998203837. The reversal of 998203801 is 108302899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 108302899 = 47 ⋅2304317.

It is not a de Polignac number, because 998203801 - 2¹ = 998203799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998203891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71300265 + ... + 71300278.

It is an arithmetic number, because the mean of its divisors is an integer number (285201088).

Almost surely, 2^998203801 is an apocalyptic number.

It is an amenable number.

998203801 is a deficient number, since it is larger than the sum of its proper divisors (142600551).

998203801 is a wasteful number, since it uses less digits than its factorization.

998203801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142600550.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 998203801 is about 31594.3634371702. The cubic root of 998203801 is about 999.4009081606.

The spelling of 998203801 in words is "nine hundred ninety-eight million, two hundred three thousand, eight hundred one".