988423893 has 6 divisors (see below), whose sum is σ = 1427723414. Its totient is φ = 658949256.

The previous prime is 988423847. The next prime is 988423913. The reversal of 988423893 is 398324889.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 704265444 + 284158449 = 26538^2 + 16857^2 .

It is not a de Polignac number, because 988423893 - 2⁶ = 988423829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988423493) 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 5 ways as a sum of consecutive naturals, for example, 54912430 + ... + 54912447.

Almost surely, 2^988423893 is an apocalyptic number.

It is an amenable number.

988423893 is a deficient number, since it is larger than the sum of its proper divisors (439299521).

988423893 is a wasteful number, since it uses less digits than its factorization.

988423893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109824883 (or 109824880 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 988423893 is about 31439.2094843366. The cubic root of 988423893 is about 996.1263115802.

The spelling of 988423893 in words is "nine hundred eighty-eight million, four hundred twenty-three thousand, eight hundred ninety-three".