990448183 has 4 divisors (see below), whose sum is σ = 991673280. Its totient is φ = 989223088.

The previous prime is 990448181. The next prime is 990448187. The reversal of 990448183 is 381844099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 990448183 - 2¹ = 990448181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990448181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611335 + ... + 612952.

It is an arithmetic number, because the mean of its divisors is an integer number (247918320).

Almost surely, 2^990448183 is an apocalyptic number.

990448183 is a deficient number, since it is larger than the sum of its proper divisors (1225097).

990448183 is a wasteful number, since it uses less digits than its factorization.

990448183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225096.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 990448183 is about 31471.3867346198. The cubic root of 990448183 is about 996.8058693923.

The spelling of 990448183 in words is "nine hundred ninety million, four hundred forty-eight thousand, one hundred eighty-three".