890000442 has 24 divisors (see below), whose sum is σ = 1980452916. Its totient is φ = 288648576.

The previous prime is 890000437. The next prime is 890000453. The reversal of 890000442 is 244000098.

It can be written as a sum of positive squares in 2 ways, for example, as 590052681 + 299947761 = 24291^2 + 17319^2 .

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 667503 + ... + 668834.

Almost surely, 2^890000442 is an apocalyptic number.

890000442 is an abundant number, since it is smaller than the sum of its proper divisors (1090452474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

890000442 is a wasteful number, since it uses less digits than its factorization.

890000442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336382 (or 1336379 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 890000442 is about 29832.8751882885. The cubic root of 890000442 is about 961.9003308436.

The spelling of 890000442 in words is "eight hundred ninety million, four hundred forty-two", and thus it is an aban number.