994889553 has 16 divisors (see below), whose sum is σ = 1544628096. Its totient is φ = 557781120.

The previous prime is 994889551. The next prime is 994889557. The reversal of 994889553 is 355988499.

It is a happy number.

It is not a de Polignac number, because 994889553 - 2¹ = 994889551 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (994889551) 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, 445828 + ... + 448053.

It is an arithmetic number, because the mean of its divisors is an integer number (96539256).

Almost surely, 2^994889553 is an apocalyptic number.

It is an amenable number.

994889553 is a deficient number, since it is larger than the sum of its proper divisors (549738543).

994889553 is a wasteful number, since it uses less digits than its factorization.

994889553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893944.

The product of its digits is 13996800, while the sum is 60.

The square root of 994889553 is about 31541.8698399445. The cubic root of 994889553 is about 998.2936075477.

The spelling of 994889553 in words is "nine hundred ninety-four million, eight hundred eighty-nine thousand, five hundred fifty-three".