988753221 has 12 divisors (see below), whose sum is σ = 1431518400. Its totient is φ = 657636840.

The previous prime is 988753193. The next prime is 988753247. The reversal of 988753221 is 122357889.

It is a happy number.

988753221 is a `hidden beast` number, since 98 + 8 + 7 + 532 + 21 = 666.

It is not a de Polignac number, because 988753221 - 2¹⁰ = 988752197 is a prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988753291) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123571 + ... + 131328.

It is an arithmetic number, because the mean of its divisors is an integer number (119293200).

Almost surely, 2^988753221 is an apocalyptic number.

It is an amenable number.

988753221 is a deficient number, since it is larger than the sum of its proper divisors (442765179).

988753221 is a wasteful number, since it uses less digits than its factorization.

988753221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255336 (or 255333 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 988753221 is about 31444.4465844130. The cubic root of 988753221 is about 996.2369307390.

The spelling of 988753221 in words is "nine hundred eighty-eight million, seven hundred fifty-three thousand, two hundred twenty-one".