988791388 has 48 divisors (see below), whose sum is σ = 1969196320. Its totient is φ = 430665984.

The previous prime is 988791329. The next prime is 988791389. The reversal of 988791388 is 883197889.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988791389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271870 + ... + 275482.

Almost surely, 2^988791388 is an apocalyptic number.

It is an amenable number.

988791388 is a deficient number, since it is larger than the sum of its proper divisors (980404932).

988791388 is a wasteful number, since it uses less digits than its factorization.

988791388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926 (or 3924 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 61.

The square root of 988791388 is about 31445.0534742748. The cubic root of 988791388 is about 996.2497492006.

The spelling of 988791388 in words is "nine hundred eighty-eight million, seven hundred ninety-one thousand, three hundred eighty-eight".