988572021 has 8 divisors (see below), whose sum is σ = 1348749600. Its totient is φ = 643721232.

The previous prime is 988571897. The next prime is 988572029. The reversal of 988572021 is 120275889.

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

It is not a de Polignac number, because 988572021 - 2⁷ = 988571893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988572029) 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, 3831546 + ... + 3831803.

It is an arithmetic number, because the mean of its divisors is an integer number (168593700).

Almost surely, 2^988572021 is an apocalyptic number.

It is an amenable number.

988572021 is a deficient number, since it is larger than the sum of its proper divisors (360177579).

988572021 is a wasteful number, since it uses less digits than its factorization.

988572021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7663395.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 988572021 is about 31441.5651805059. The cubic root of 988572021 is about 996.1760698634.

The spelling of 988572021 in words is "nine hundred eighty-eight million, five hundred seventy-two thousand, twenty-one".