999703080 has 256 divisors, whose sum is σ = 3512160000. Its totient is φ = 252564480.

The previous prime is 999703079. The next prime is 999703157. The reversal of 999703080 is 80307999.

It is a happy number.

It is a super-2 number, since 2×999703080² = 1998812496322972800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) 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 (45).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1847610 + ... + 1848150.

It is an arithmetic number, because the mean of its divisors is an integer number (13719375).

Almost surely, 2^999703080 is an apocalyptic number.

999703080 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 999703080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1756080000).

999703080 is an abundant number, since it is smaller than the sum of its proper divisors (2512456920).

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

999703080 is a wasteful number, since it uses less digits than its factorization.

999703080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 999703080 is about 31618.0815357289. The cubic root of 999703080 is about 999.9010168693.

The spelling of 999703080 in words is "nine hundred ninety-nine million, seven hundred three thousand, eighty".