988004057 has 4 divisors (see below), whose sum is σ = 988075536. Its totient is φ = 987932580.

The previous prime is 988004051. The next prime is 988004071. The reversal of 988004057 is 750400889.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 988004057 - 2¹⁶ = 987938521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988004051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7643 + ... + 45104.

It is an arithmetic number, because the mean of its divisors is an integer number (247018884).

Almost surely, 2^988004057 is an apocalyptic number.

It is an amenable number.

988004057 is a deficient number, since it is larger than the sum of its proper divisors (71479).

988004057 is a wasteful number, since it uses less digits than its factorization.

988004057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71478.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 988004057 is about 31432.5318261193. The cubic root of 988004057 is about 995.9852557319.

The spelling of 988004057 in words is "nine hundred eighty-eight million, four thousand, fifty-seven".