998734813 has 8 divisors (see below), whose sum is σ = 1022429408. Its totient is φ = 975061584.

The previous prime is 998734801. The next prime is 998734817. The reversal of 998734813 is 318437899.

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 998734813 - 2²⁹ = 461863901 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 (998734817) 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, 128095 + ... + 135667.

It is an arithmetic number, because the mean of its divisors is an integer number (127803676).

Almost surely, 2^998734813 is an apocalyptic number.

It is an amenable number.

998734813 is a deficient number, since it is larger than the sum of its proper divisors (23694595).

998734813 is a wasteful number, since it uses less digits than its factorization.

998734813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10683.

The product of its digits is 1306368, while the sum is 52.

The square root of 998734813 is about 31602.7659074328. The cubic root of 998734813 is about 999.5780930195.

The spelling of 998734813 in words is "nine hundred ninety-eight million, seven hundred thirty-four thousand, eight hundred thirteen".