8899949 has 2 divisors, whose sum is σ = 8899950. Its totient is φ = 8899948.

The previous prime is 8899937. The next prime is 8899987. The reversal of 8899949 is 9499988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5221225 + 3678724 = 2285^2 + 1918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8899949 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 8899894 and 8899903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8899909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4449974 + 4449975.

It is an arithmetic number, because the mean of its divisors is an integer number (4449975).

Almost surely, 2^8899949 is an apocalyptic number.

It is an amenable number.

8899949 is a deficient number, since it is larger than the sum of its proper divisors (1).

8899949 is an equidigital number, since it uses as much as digits as its factorization.

8899949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 56.

The square root of 8899949 is about 2983.2782304036. The cubic root of 8899949 is about 207.2347139628.

The spelling of 8899949 in words is "eight million, eight hundred ninety-nine thousand, nine hundred forty-nine".