998623199 has 8 divisors (see below), whose sum is σ = 1141628928. Its totient is φ = 855703800.

The previous prime is 998623187. The next prime is 998623211. The reversal of 998623199 is 991326899.

It is an interprime number because it is at equal distance from previous prime (998623187) and next prime (998623211).

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

It is not a de Polignac number, because 998623199 - 2⁸ = 998622943 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 (998623159) 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, 5474 + ... + 45024.

It is an arithmetic number, because the mean of its divisors is an integer number (142703616).

Almost surely, 2^998623199 is an apocalyptic number.

998623199 is a deficient number, since it is larger than the sum of its proper divisors (143005729).

998623199 is a wasteful number, since it uses less digits than its factorization.

998623199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43165.

The product of its digits is 1889568, while the sum is 56.

The square root of 998623199 is about 31600.9999683554. Note that the first 4 decimals coincide. The cubic root of 998623199 is about 999.5408555520.

The spelling of 998623199 in words is "nine hundred ninety-eight million, six hundred twenty-three thousand, one hundred ninety-nine".