999130 has 32 divisors (see below), whose sum is σ = 2032128. Its totient is φ = 350400.

The previous prime is 999101. The next prime is 999133. The reversal of 999130 is 31999.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 999092 and 999101.

It is not an unprimeable number, because it can be changed into a prime (999133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3264 + ... + 3556.

It is an arithmetic number, because the mean of its divisors is an integer number (63504).

2⁹⁹⁹¹³⁰ is an apocalyptic number.

999130 is an abundant number, since it is smaller than the sum of its proper divisors (1032998).

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

999130 is a wasteful number, since it uses less digits than its factorization.

999130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342.

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 999130 is about 999.5649053463. The cubic root of 999130 is about 99.9709915859.

It can be divided in two parts, 99 and 9130, that added together give a palindrome (9229).

The spelling of 999130 in words is "nine hundred ninety-nine thousand, one hundred thirty".