999369630 has 256 divisors, whose sum is σ = 3235921920. Its totient is φ = 214617600.

The previous prime is 999369611. The next prime is 999369641. The reversal of 999369630 is 36963999.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2167600 + ... + 2168060.

It is an arithmetic number, because the mean of its divisors is an integer number (12640320).

Almost surely, 2^999369630 is an apocalyptic number.

999369630 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 999369630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1617960960).

999369630 is an abundant number, since it is smaller than the sum of its proper divisors (2236552290).

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

999369630 is a wasteful number, since it uses less digits than its factorization.

999369630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 2125764, while the sum is 54.

The square root of 999369630 is about 31612.8080056170. The cubic root of 999369630 is about 999.7898324994.

It can be divided in two parts, 999369 and 630, that added together give a palindrome (999999).

The spelling of 999369630 in words is "nine hundred ninety-nine million, three hundred sixty-nine thousand, six hundred thirty".