999975330 has 48 divisors (see below), whose sum is σ = 2618945784. Its totient is φ = 264710400.

The previous prime is 999975329. The next prime is 999975331. The reversal of 999975330 is 33579999.

It is an interprime number because it is at equal distance from previous prime (999975329) and next prime (999975331).

It can be written as a sum of positive squares in 4 ways, for example, as 918271809 + 81703521 = 30303^2 + 9039^2 .

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (999975331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28221 + ... + 52880.

Almost surely, 2^999975330 is an apocalyptic number.

999975330 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

999975330 is an abundant number, since it is smaller than the sum of its proper divisors (1618970454).

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

999975330 is a wasteful number, since it uses less digits than its factorization.

999975330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81251 (or 81248 counting only the distinct ones).

The product of its (nonzero) digits is 2066715, while the sum is 54.

The square root of 999975330 is about 31622.3865323286. The cubic root of 999975330 is about 999.9917765990.

The spelling of 999975330 in words is "nine hundred ninety-nine million, nine hundred seventy-five thousand, three hundred thirty".