101489 has 2 divisors, whose sum is σ = 101490. Its totient is φ = 101488.

The previous prime is 101483. The next prime is 101501. The reversal of 101489 is 984101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93025 + 8464 = 305^2 + 92^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101489 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 101489.

It is not a weakly prime, because it can be changed into another prime (101483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50744 + 50745.

It is an arithmetic number, because the mean of its divisors is an integer number (50745).

2¹⁰¹⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

101489 is a deficient number, since it is larger than the sum of its proper divisors (1).

101489 is an equidigital number, since it uses as much as digits as its factorization.

101489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 101489 is about 318.5733824412. The cubic root of 101489 is about 46.6451317874.

The spelling of 101489 in words is "one hundred one thousand, four hundred eighty-nine".