998466679 has 6 divisors (see below), whose sum is σ = 1161481704. Its totient is φ = 855828540.

The previous prime is 998466671. The next prime is 998466683. The reversal of 998466679 is 976664899.

It is not a de Polignac number, because 998466679 - 2³ = 998466671 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 998466679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998466671) 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 5 ways as a sum of consecutive naturals, for example, 10188387 + ... + 10188484.

It is an arithmetic number, because the mean of its divisors is an integer number (193580284).

Almost surely, 2^998466679 is an apocalyptic number.

998466679 is a deficient number, since it is larger than the sum of its proper divisors (163015025).

998466679 is a wasteful number, since it uses less digits than its factorization.

998466679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20376885 (or 20376878 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 64.

The square root of 998466679 is about 31598.5233673980. The cubic root of 998466679 is about 999.4886315469.

The spelling of 998466679 in words is "nine hundred ninety-eight million, four hundred sixty-six thousand, six hundred seventy-nine".