988791387 has 8 divisors (see below), whose sum is σ = 1330710336. Its totient is φ = 653033352.

The previous prime is 988791329. The next prime is 988791389. The reversal of 988791387 is 783197889.

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

It is not a de Polignac number, because 988791387 - 2⁷ = 988791259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 988791387.

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

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1539853 + ... + 1540494.

It is an arithmetic number, because the mean of its divisors is an integer number (166338792).

Almost surely, 2^988791387 is an apocalyptic number.

988791387 is a deficient number, since it is larger than the sum of its proper divisors (341918949).

988791387 is a wasteful number, since it uses less digits than its factorization.

988791387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080457.

The product of its digits is 6096384, while the sum is 60.

The square root of 988791387 is about 31445.0534583740. The cubic root of 988791387 is about 996.2497488647.

The spelling of 988791387 in words is "nine hundred eighty-eight million, seven hundred ninety-one thousand, three hundred eighty-seven".