21398000589 has 24 divisors (see below), whose sum is σ = 37401549120. Its totient is φ = 11508167808.

The previous prime is 21398000579. The next prime is 21398000599. The reversal of 21398000589 is 98500089312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21398000579) and next prime (21398000599).

It is not a de Polignac number, because 21398000589 - 2²⁰ = 21396952013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21398000579) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9988659 + ... + 9990800.

It is an arithmetic number, because the mean of its divisors is an integer number (1558397880).

Almost surely, 2^21398000589 is an apocalyptic number.

It is an amenable number.

21398000589 is a deficient number, since it is larger than the sum of its proper divisors (16003548531).

21398000589 is a wasteful number, since it uses less digits than its factorization.

21398000589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19979489 (or 19979486 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 21398000589 in words is "twenty-one billion, three hundred ninety-eight million, five hundred eighty-nine", and thus it is an aban number.