990254 has 8 divisors (see below), whose sum is σ = 1495800. Its totient is φ = 491656.

The previous prime is 990239. The next prime is 990259. The reversal of 990254 is 452099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1364 + ... + 1959.

It is an arithmetic number, because the mean of its divisors is an integer number (186975).

2⁹⁹⁰²⁵⁴ is an apocalyptic number.

990254 is a deficient number, since it is larger than the sum of its proper divisors (505546).

990254 is a wasteful number, since it uses less digits than its factorization.

990254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 990254 is about 995.1150687232. The cubic root of 990254 is about 99.6740721981.

The spelling of 990254 in words is "nine hundred ninety thousand, two hundred fifty-four".