49648129 has 2 divisors, whose sum is σ = 49648130. Its totient is φ = 49648128.

The previous prime is 49648091. The next prime is 49648147. The reversal of 49648129 is 92184694.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44195904 + 5452225 = 6648^2 + 2335^2 .

It is a cyclic number.

It is not a de Polignac number, because 49648129 - 2⁹ = 49647617 is a prime.

It is not a weakly prime, because it can be changed into another prime (49648199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24824064 + 24824065.

It is an arithmetic number, because the mean of its divisors is an integer number (24824065).

Almost surely, 2^49648129 is an apocalyptic number.

It is an amenable number.

49648129 is a deficient number, since it is larger than the sum of its proper divisors (1).

49648129 is an equidigital number, since it uses as much as digits as its factorization.

49648129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 43.

The square root of 49648129 is about 7046.1428455574. The cubic root of 49648129 is about 367.5369120836.

The spelling of 49648129 in words is "forty-nine million, six hundred forty-eight thousand, one hundred twenty-nine".