100487489 has 2 divisors, whose sum is σ = 100487490. Its totient is φ = 100487488.

The previous prime is 100487479. The next prime is 100487501. The reversal of 100487489 is 984784001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73530625 + 26956864 = 8575^2 + 5192^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100487489 is a prime.

It is not a weakly prime, because it can be changed into another prime (100487419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50243744 + 50243745.

It is an arithmetic number, because the mean of its divisors is an integer number (50243745).

Almost surely, 2^100487489 is an apocalyptic number.

It is an amenable number.

100487489 is a deficient number, since it is larger than the sum of its proper divisors (1).

100487489 is an equidigital number, since it uses as much as digits as its factorization.

100487489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 100487489 is about 10024.3448164955. The cubic root of 100487489 is about 464.9119022219.

The spelling of 100487489 in words is "one hundred million, four hundred eighty-seven thousand, four hundred eighty-nine".