99318690 has 64 divisors (see below), whose sum is σ = 268531200. Its totient is φ = 26116992.

The previous prime is 99318689. The next prime is 99318727. The reversal of 99318690 is 9681399.

It is a super-2 number, since 2×99318690² = 19728404366632200, which contains 22 as substring.

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

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 17191 + ... + 22229.

It is an arithmetic number, because the mean of its divisors is an integer number (4195800).

Almost surely, 2^99318690 is an apocalyptic number.

99318690 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 99318690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134265600).

99318690 is an abundant number, since it is smaller than the sum of its proper divisors (169212510).

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

99318690 is a wasteful number, since it uses less digits than its factorization.

99318690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128 (or 5122 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 99318690 is about 9965.8762785818. The cubic root of 99318690 is about 463.1023600203.

It can be divided in two parts, 993 and 18690, that added together give a 9-th power (19683 = 3⁹).

The spelling of 99318690 in words is "ninety-nine million, three hundred eighteen thousand, six hundred ninety".