998805470799 has 8 divisors (see below), whose sum is σ = 1347785695872. Its totient is φ = 657847779800.

The previous prime is 998805470759. The next prime is 998805470807. The reversal of 998805470799 is 997074508899.

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 998805470799 - 2⁸ = 998805470543 is a prime.

It is a super-2 number, since 2×998805470799² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 998805470799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998805470759) 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, 2005633227 + ... + 2005633724.

It is an arithmetic number, because the mean of its divisors is an integer number (168473211984).

Almost surely, 2^998805470799 is an apocalyptic number.

998805470799 is a deficient number, since it is larger than the sum of its proper divisors (348980225073).

998805470799 is a wasteful number, since it uses less digits than its factorization.

998805470799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4011267037.

The product of its (nonzero) digits is 411505920, while the sum is 75.

The spelling of 998805470799 in words is "nine hundred ninety-eight billion, eight hundred five million, four hundred seventy thousand, seven hundred ninety-nine".