49720789 has 2 divisors, whose sum is σ = 49720790. Its totient is φ = 49720788.

The previous prime is 49720787. The next prime is 49720831. The reversal of 49720789 is 98702794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26440164 + 23280625 = 5142^2 + 4825^2 .

It is a cyclic number.

It is not a de Polignac number, because 49720789 - 2¹ = 49720787 is a prime.

Together with 49720787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49720787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24860394 + 24860395.

It is an arithmetic number, because the mean of its divisors is an integer number (24860395).

Almost surely, 2^49720789 is an apocalyptic number.

It is an amenable number.

49720789 is a deficient number, since it is larger than the sum of its proper divisors (1).

49720789 is an equidigital number, since it uses as much as digits as its factorization.

49720789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 49720789 is about 7051.2969728980. The cubic root of 49720789 is about 367.7161213540.

The spelling of 49720789 in words is "forty-nine million, seven hundred twenty thousand, seven hundred eighty-nine".