998204743 has 4 divisors (see below), whose sum is σ = 1030404928. Its totient is φ = 966004560.

The previous prime is 998204723. The next prime is 998204747. The reversal of 998204743 is 347402899.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998204743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 998204693 and 998204702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998204747) 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, 16100046 + ... + 16100107.

It is an arithmetic number, because the mean of its divisors is an integer number (257601232).

Almost surely, 2^998204743 is an apocalyptic number.

998204743 is a deficient number, since it is larger than the sum of its proper divisors (32200185).

998204743 is a wasteful number, since it uses less digits than its factorization.

998204743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32200184.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 998204743 is about 31594.3783448891. The cubic root of 998204743 is about 999.4012225371.

The spelling of 998204743 in words is "nine hundred ninety-eight million, two hundred four thousand, seven hundred forty-three".