988901389 has 12 divisors (see below), whose sum is σ = 1157014044. Its totient is φ = 842722944.

The previous prime is 988901371. The next prime is 988901411. The reversal of 988901389 is 983109889.

988901389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 355624164 + 633277225 = 18858^2 + 25165^2 .

It is a de Polignac number, because none of the positive numbers 2^k-988901389 is a prime.

It is a super-2 number, since 2×988901389² = 1955851914332258642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988901359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49852 + ... + 66805.

It is an arithmetic number, because the mean of its divisors is an integer number (96417837).

Almost surely, 2^988901389 is an apocalyptic number.

It is an amenable number.

988901389 is a deficient number, since it is larger than the sum of its proper divisors (168112655).

988901389 is a wasteful number, since it uses less digits than its factorization.

988901389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116844 (or 116837 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 55.

The square root of 988901389 is about 31446.8025242631. The cubic root of 988901389 is about 996.2866914065.

The spelling of 988901389 in words is "nine hundred eighty-eight million, nine hundred one thousand, three hundred eighty-nine".