999930750 has 384 divisors, whose sum is σ = 3288729600. Its totient is φ = 201801600.

The previous prime is 999930739. The next prime is 999930751. The reversal of 999930750 is 57039999.

It is a junction number, because it is equal to n+sod(n) for n = 999930693 and 999930702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999930751) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 43475239 + ... + 43475261.

It is an arithmetic number, because the mean of its divisors is an integer number (8564400).

Almost surely, 2^999930750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999930750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1644364800).

999930750 is an abundant number, since it is smaller than the sum of its proper divisors (2288798850).

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

999930750 is a wasteful number, since it uses less digits than its factorization.

999930750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 688905, while the sum is 51.

The square root of 999930750 is about 31621.6816440872. The cubic root of 999930750 is about 999.9769161338.

The spelling of 999930750 in words is "nine hundred ninety-nine million, nine hundred thirty thousand, seven hundred fifty".