990230512 has 40 divisors (see below), whose sum is σ = 1958557680. Its totient is φ = 484861440.

The previous prime is 990230503. The next prime is 990230513. The reversal of 990230512 is 215032099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990230513) 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, 263398 + ... + 267130.

It is an arithmetic number, because the mean of its divisors is an integer number (48963942).

Almost surely, 2^990230512 is an apocalyptic number.

It is an amenable number.

990230512 is a deficient number, since it is larger than the sum of its proper divisors (968327168).

990230512 is a wasteful number, since it uses less digits than its factorization.

990230512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081 (or 4075 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 990230512 is about 31467.9283080409. The cubic root of 990230512 is about 996.7328412989.

The spelling of 990230512 in words is "nine hundred ninety million, two hundred thirty thousand, five hundred twelve".