990169174 has 4 divisors (see below), whose sum is σ = 1485253764. Its totient is φ = 495084586.

The previous prime is 990169151. The next prime is 990169177. The reversal of 990169174 is 471961099.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990169177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247542292 + ... + 247542295.

It is an arithmetic number, because the mean of its divisors is an integer number (371313441).

Almost surely, 2^990169174 is an apocalyptic number.

990169174 is a deficient number, since it is larger than the sum of its proper divisors (495084590).

990169174 is a wasteful number, since it uses less digits than its factorization.

990169174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495084589.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 990169174 is about 31466.9536816006. The cubic root of 990169174 is about 996.7122606157.

The spelling of 990169174 in words is "nine hundred ninety million, one hundred sixty-nine thousand, one hundred seventy-four".