998004291 has 4 divisors (see below), whose sum is σ = 1330672392. Its totient is φ = 665336192.

The previous prime is 998004283. The next prime is 998004299. The reversal of 998004291 is 192400899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 192400899 = 3 ⋅64133633.

It is an interprime number because it is at equal distance from previous prime (998004283) and next prime (998004299).

It is a cyclic number.

It is not a de Polignac number, because 998004291 - 2³ = 998004283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998004299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166334046 + ... + 166334051.

It is an arithmetic number, because the mean of its divisors is an integer number (332668098).

Almost surely, 2^998004291 is an apocalyptic number.

998004291 is a deficient number, since it is larger than the sum of its proper divisors (332668101).

998004291 is a wasteful number, since it uses less digits than its factorization.

998004291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332668100.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 998004291 is about 31591.2059124054. The cubic root of 998004291 is about 999.3343206360.

The spelling of 998004291 in words is "nine hundred ninety-eight million, four thousand, two hundred ninety-one".