99197910 has 48 divisors (see below), whose sum is σ = 294761376. Its totient is φ = 22673664.

The previous prime is 99197899. The next prime is 99197911. The reversal of 99197910 is 1979199.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99197911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78099 + ... + 79358.

It is an arithmetic number, because the mean of its divisors is an integer number (6140862).

Almost surely, 2^99197910 is an apocalyptic number.

99197910 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

99197910 is an abundant number, since it is smaller than the sum of its proper divisors (195563466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99197910 is a wasteful number, since it uses less digits than its factorization.

99197910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157477 (or 157474 counting only the distinct ones).

The product of its (nonzero) digits is 45927, while the sum is 45.

The square root of 99197910 is about 9959.8147573135. The cubic root of 99197910 is about 462.9145598802.

It can be divided in two parts, 9 and 9197910, that added together give a palindrome (9197919).

The spelling of 99197910 in words is "ninety-nine million, one hundred ninety-seven thousand, nine hundred ten".