988504021 has 8 divisors (see below), whose sum is σ = 1001246400. Its totient is φ = 975781632.

The previous prime is 988503979. The next prime is 988504057. The reversal of 988504021 is 120405889.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-988504021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988504091) 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, 111861 + ... + 120373.

It is an arithmetic number, because the mean of its divisors is an integer number (125155800).

Almost surely, 2^988504021 is an apocalyptic number.

It is an amenable number.

988504021 is a deficient number, since it is larger than the sum of its proper divisors (12742379).

988504021 is a wasteful number, since it uses less digits than its factorization.

988504021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9995.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 988504021 is about 31440.4837908070. The cubic root of 988504021 is about 996.1532283221.

The spelling of 988504021 in words is "nine hundred eighty-eight million, five hundred four thousand, twenty-one".