997999030 has 16 divisors (see below), whose sum is σ = 2053026720. Its totient is φ = 342171072.

The previous prime is 997999019. The next prime is 997999031. The reversal of 997999030 is 30999799.

997999030 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997999031) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7128495 + ... + 7128634.

It is an arithmetic number, because the mean of its divisors is an integer number (128314170).

Almost surely, 2^997999030 is an apocalyptic number.

997999030 is an abundant number, since it is smaller than the sum of its proper divisors (1055027690).

997999030 is a wasteful number, since it uses less digits than its factorization.

997999030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14257143.

The product of its (nonzero) digits is 1240029, while the sum is 55.

The square root of 997999030 is about 31591.1226454522. The cubic root of 997999030 is about 999.3325646291.

The spelling of 997999030 in words is "nine hundred ninety-seven million, nine hundred ninety-nine thousand, thirty".