998871845 has 8 divisors (see below), whose sum is σ = 1216536864. Its totient is φ = 787170384.

The previous prime is 998871833. The next prime is 998871847. The reversal of 998871845 is 548178899.

998871845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 998871845 - 2¹⁴ = 998855461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998871847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1490519 + ... + 1491188.

It is an arithmetic number, because the mean of its divisors is an integer number (152067108).

Almost surely, 2^998871845 is an apocalyptic number.

It is an amenable number.

998871845 is a deficient number, since it is larger than the sum of its proper divisors (217665019).

998871845 is a wasteful number, since it uses less digits than its factorization.

998871845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981779.

The product of its digits is 5806080, while the sum is 59.

The square root of 998871845 is about 31604.9338711537. The cubic root of 998871845 is about 999.6238068298.

The spelling of 998871845 in words is "nine hundred ninety-eight million, eight hundred seventy-one thousand, eight hundred forty-five".