889503981 has 8 divisors (see below), whose sum is σ = 1248426720. Its totient is φ = 561791952.

The previous prime is 889503973. The next prime is 889503991. The reversal of 889503981 is 189305988.

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

It is not a de Polignac number, because 889503981 - 2³ = 889503973 is a prime.

It is a super-2 number, since 2×889503981² = 1582434664429696722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889503911) 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 in 7 ways as a sum of consecutive naturals, for example, 7802610 + ... + 7802723.

It is an arithmetic number, because the mean of its divisors is an integer number (156053340).

Almost surely, 2^889503981 is an apocalyptic number.

It is an amenable number.

889503981 is a deficient number, since it is larger than the sum of its proper divisors (358922739).

889503981 is a wasteful number, since it uses less digits than its factorization.

889503981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15605355.

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 889503981 is about 29824.5533244004. The cubic root of 889503981 is about 961.7214414857.

The spelling of 889503981 in words is "eight hundred eighty-nine million, five hundred three thousand, nine hundred eighty-one".