49910909 has 2 divisors, whose sum is σ = 49910910. Its totient is φ = 49910908.

The previous prime is 49910879. The next prime is 49910921. The reversal of 49910909 is 90901994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38875225 + 11035684 = 6235^2 + 3322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49910909 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49910969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24955454 + 24955455.

It is an arithmetic number, because the mean of its divisors is an integer number (24955455).

Almost surely, 2^49910909 is an apocalyptic number.

It is an amenable number.

49910909 is a deficient number, since it is larger than the sum of its proper divisors (1).

49910909 is an equidigital number, since it uses as much as digits as its factorization.

49910909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 49910909 is about 7064.7653181121. The cubic root of 49910909 is about 368.1842104088.

The spelling of 49910909 in words is "forty-nine million, nine hundred ten thousand, nine hundred nine".