799919998 has 8 divisors (see below), whose sum is σ = 1200467808. Its totient is φ = 399764064.

The previous prime is 799919993. The next prime is 799920029. The reversal of 799919998 is 899919997.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799919993) 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, 92811 + ... + 101062.

It is an arithmetic number, because the mean of its divisors is an integer number (150058476).

Almost surely, 2^799919998 is an apocalyptic number.

799919998 is a deficient number, since it is larger than the sum of its proper divisors (400547810).

799919998 is a wasteful number, since it uses less digits than its factorization.

799919998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195938.

The product of its digits is 29760696, while the sum is 70.

The square root of 799919998 is about 28282.8569631853. The cubic root of 799919998 is about 928.2868209918.

Subtracting 799919998 from its reverse (899919997), we obtain a palindrome (99999999).

The spelling of 799919998 in words is "seven hundred ninety-nine million, nine hundred nineteen thousand, nine hundred ninety-eight".