99801898 has 8 divisors (see below), whose sum is σ = 171088992. Its totient is φ = 42772236.

The previous prime is 99801887. The next prime is 99801901. The reversal of 99801898 is 89810899.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3564340 + ... + 3564367.

It is an arithmetic number, because the mean of its divisors is an integer number (21386124).

Almost surely, 2^99801898 is an apocalyptic number.

99801898 is a deficient number, since it is larger than the sum of its proper divisors (71287094).

99801898 is a wasteful number, since it uses less digits than its factorization.

99801898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7128716.

The product of its (nonzero) digits is 373248, while the sum is 52.

The square root of 99801898 is about 9990.0899895847. The cubic root of 99801898 is about 463.8521780652.

Subtracting from 99801898 its reverse (89810899), we obtain a palindrome (9990999).

The spelling of 99801898 in words is "ninety-nine million, eight hundred one thousand, eight hundred ninety-eight".