998626899 has 8 divisors (see below), whose sum is σ = 1332545472. Its totient is φ = 665229800.

The previous prime is 998626891. The next prime is 998626957.

998626899 is nontrivially palindromic in base 10.

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 998626899 - 2³ = 998626891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998626891) 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 7 ways as a sum of consecutive naturals, for example, 125877 + ... + 133574.

It is an arithmetic number, because the mean of its divisors is an integer number (166568184).

Almost surely, 2^998626899 is an apocalyptic number.

998626899 is a deficient number, since it is larger than the sum of its proper divisors (333918573).

998626899 is a wasteful number, since it uses less digits than its factorization.

998626899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260737.

The product of its digits is 30233088, while the sum is 66.

The square root of 998626899 is about 31601.0585107525. The cubic root of 998626899 is about 999.5420900171.

The spelling of 998626899 in words is "nine hundred ninety-eight million, six hundred twenty-six thousand, eight hundred ninety-nine".