1199899008 has 448 divisors, whose sum is σ = 4495115520. Its totient is φ = 309795840.

The previous prime is 1199898991. The next prime is 1199899009. The reversal of 1199899008 is 8009989911.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1199899009) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 7184941 + ... + 7185107.

It is an arithmetic number, because the mean of its divisors is an integer number (10033740).

Almost surely, 2^1199899008 is an apocalyptic number.

1199899008 is a gapful number since it is divisible by the number (18) 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 1199899008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2247557760).

1199899008 is an abundant number, since it is smaller than the sum of its proper divisors (3295216512).

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

1199899008 is an equidigital number, since it uses as much as digits as its factorization.

1199899008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 54.

The square root of 1199899008 is about 34639.5584267467. The cubic root of 1199899008 is about 1062.6287572312.

The spelling of 1199899008 in words is "one billion, one hundred ninety-nine million, eight hundred ninety-nine thousand, eight".