99190000 has 200 divisors, whose sum is σ = 298279520. Its totient is φ = 31104000.

The previous prime is 99189989. The next prime is 99190001. The reversal of 99190000 is 9199.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×99190000² = 19677312200000000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99190001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 909946 + ... + 910054.

Almost surely, 2^99190000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99190000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149139760).

99190000 is an abundant number, since it is smaller than the sum of its proper divisors (199089520).

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

99190000 is a wasteful number, since it uses less digits than its factorization.

99190000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 99190000 is about 9959.4176536583. The cubic root of 99190000 is about 462.9022553485.

Adding to 99190000 its reverse (9199), we get a palindrome (99199199).

The spelling of 99190000 in words is "ninety-nine million, one hundred ninety thousand".