988042821 has 8 divisors (see below), whose sum is σ = 1318982880. Its totient is φ = 657898992.

The previous prime is 988042799. The next prime is 988042823. The reversal of 988042821 is 128240889.

988042821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 988042821 - 2²² = 983848517 is a prime.

It is a super-2 number, since 2×988042821² = 1952457232259276082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988042823) 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, 196155 + ... + 201128.

It is an arithmetic number, because the mean of its divisors is an integer number (164872860).

Almost surely, 2^988042821 is an apocalyptic number.

It is an amenable number.

988042821 is a deficient number, since it is larger than the sum of its proper divisors (330940059).

988042821 is a wasteful number, since it uses less digits than its factorization.

988042821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398115.

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 988042821 is about 31433.1484423689. The cubic root of 988042821 is about 995.9982812748.

The spelling of 988042821 in words is "nine hundred eighty-eight million, forty-two thousand, eight hundred twenty-one".