900427989 has 16 divisors (see below), whose sum is σ = 1295971200. Its totient is φ = 554385216.

The previous prime is 900427981. The next prime is 900427999. The reversal of 900427989 is 989724009.

It is a happy number.

It is not a de Polignac number, because 900427989 - 2³ = 900427981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900427981) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 222994 + ... + 226995.

It is an arithmetic number, because the mean of its divisors is an integer number (80998200).

Almost surely, 2^900427989 is an apocalyptic number.

It is an amenable number.

900427989 is a deficient number, since it is larger than the sum of its proper divisors (395543211).

900427989 is a wasteful number, since it uses less digits than its factorization.

900427989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450044.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 900427989 is about 30007.1323021711. The cubic root of 900427989 is about 965.6424043658.

The spelling of 900427989 in words is "nine hundred million, four hundred twenty-seven thousand, nine hundred eighty-nine".