988439291 has 4 divisors (see below), whose sum is σ = 1129644912. Its totient is φ = 847233672.

The previous prime is 988439273. The next prime is 988439293. The reversal of 988439291 is 192934889.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-988439291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988439293) 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 3 ways as a sum of consecutive naturals, for example, 70602800 + ... + 70602813.

It is an arithmetic number, because the mean of its divisors is an integer number (282411228).

Almost surely, 2^988439291 is an apocalyptic number.

988439291 is a deficient number, since it is larger than the sum of its proper divisors (141205621).

988439291 is a wasteful number, since it uses less digits than its factorization.

988439291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141205620.

The product of its digits is 1119744, while the sum is 53.

The square root of 988439291 is about 31439.4543686750. The cubic root of 988439291 is about 996.1314842170.

The spelling of 988439291 in words is "nine hundred eighty-eight million, four hundred thirty-nine thousand, two hundred ninety-one".