989438023 has 8 divisors (see below), whose sum is σ = 1131086880. Its totient is φ = 847864320.

The previous prime is 989437997. The next prime is 989438059. The reversal of 989438023 is 320834989.

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

It is a cyclic number.

It is not a de Polignac number, because 989438023 - 2¹⁷ = 989306951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989438123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13023 + ... + 46351.

It is an arithmetic number, because the mean of its divisors is an integer number (141385860).

Almost surely, 2^989438023 is an apocalyptic number.

989438023 is a deficient number, since it is larger than the sum of its proper divisors (141648857).

989438023 is a wasteful number, since it uses less digits than its factorization.

989438023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37577.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 989438023 is about 31455.3337766427. Note that the first 3 decimals coincide. The cubic root of 989438023 is about 996.4668727129.

The spelling of 989438023 in words is "nine hundred eighty-nine million, four hundred thirty-eight thousand, twenty-three".