49901609 has 2 divisors, whose sum is σ = 49901610. Its totient is φ = 49901608.

The previous prime is 49901603. The next prime is 49901623. The reversal of 49901609 is 90610994.

49901609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38477209 + 11424400 = 6203^2 + 3380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49901609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49901603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24950804 + 24950805.

It is an arithmetic number, because the mean of its divisors is an integer number (24950805).

Almost surely, 2^49901609 is an apocalyptic number.

It is an amenable number.

49901609 is a deficient number, since it is larger than the sum of its proper divisors (1).

49901609 is an equidigital number, since it uses as much as digits as its factorization.

49901609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 49901609 is about 7064.1070914872. The cubic root of 49901609 is about 368.1613408203.

The spelling of 49901609 in words is "forty-nine million, nine hundred one thousand, six hundred nine".