990432175 has 24 divisors (see below), whose sum is σ = 1294774272. Its totient is φ = 750444000.

The previous prime is 990432167. The next prime is 990432193. The reversal of 990432175 is 571234099.

It is not a de Polignac number, because 990432175 - 2³ = 990432167 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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 23 ways as a sum of consecutive naturals, for example, 22830 + ... + 50020.

It is an arithmetic number, because the mean of its divisors is an integer number (53948928).

Almost surely, 2^990432175 is an apocalyptic number.

990432175 is a deficient number, since it is larger than the sum of its proper divisors (304342097).

990432175 is a wasteful number, since it uses less digits than its factorization.

990432175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27279 (or 27274 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 990432175 is about 31471.1324073348. The cubic root of 990432175 is about 996.8004991116.

The spelling of 990432175 in words is "nine hundred ninety million, four hundred thirty-two thousand, one hundred seventy-five".