999190080 has 280 divisors, whose sum is σ = 4062788928. Its totient is φ = 228344832.

The previous prime is 999190067. The next prime is 999190111. The reversal of 999190080 is 80091999.

999190080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (280).

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 178687 + ... + 184193.

Almost surely, 2^999190080 is an apocalyptic number.

999190080 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999190080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2031394464).

999190080 is an abundant number, since it is smaller than the sum of its proper divisors (3063598848).

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

999190080 is a wasteful number, since it uses less digits than its factorization.

999190080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5543 (or 5524 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The square root of 999190080 is about 31609.9680480699. The cubic root of 999190080 is about 999.7299537483.

The spelling of 999190080 in words is "nine hundred ninety-nine million, one hundred ninety thousand, eighty".