9869449 has 2 divisors, whose sum is σ = 9869450. Its totient is φ = 9869448.

The previous prime is 9869443. The next prime is 9869467. The reversal of 9869449 is 9449689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9809424 + 60025 = 3132^2 + 245^2 .

It is a cyclic number.

It is not a de Polignac number, because 9869449 - 2¹⁵ = 9836681 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9869443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4934724 + 4934725.

It is an arithmetic number, because the mean of its divisors is an integer number (4934725).

Almost surely, 2^9869449 is an apocalyptic number.

It is an amenable number.

9869449 is a deficient number, since it is larger than the sum of its proper divisors (1).

9869449 is an equidigital number, since it uses as much as digits as its factorization.

9869449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 49.

The square root of 9869449 is about 3141.5679206409. The cubic root of 9869449 is about 214.5018138921.

The spelling of 9869449 in words is "nine million, eight hundred sixty-nine thousand, four hundred forty-nine".