8987149 has 2 divisors, whose sum is σ = 8987150. Its totient is φ = 8987148.

The previous prime is 8987137. The next prime is 8987161. The reversal of 8987149 is 9417898.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (8987137) and next prime (8987161).

It can be written as a sum of positive squares in only one way, i.e., 7590025 + 1397124 = 2755^2 + 1182^2 .

It is a cyclic number.

It is not a de Polignac number, because 8987149 - 2²¹ = 6889997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8987099 and 8987108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8987449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4493574 + 4493575.

It is an arithmetic number, because the mean of its divisors is an integer number (4493575).

Almost surely, 2^8987149 is an apocalyptic number.

It is an amenable number.

8987149 is a deficient number, since it is larger than the sum of its proper divisors (1).

8987149 is an equidigital number, since it uses as much as digits as its factorization.

8987149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 46.

The square root of 8987149 is about 2997.8574015453. The cubic root of 8987149 is about 207.9093308594.

The spelling of 8987149 in words is "eight million, nine hundred eighty-seven thousand, one hundred forty-nine".