49689889 has 2 divisors, whose sum is σ = 49689890. Its totient is φ = 49689888.

The previous prime is 49689877. The next prime is 49689907. The reversal of 49689889 is 98898694.

It is a happy number.

49689889 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., 36966400 + 12723489 = 6080^2 + 3567^2 .

It is a cyclic number.

It is not a de Polignac number, because 49689889 - 2¹⁵ = 49657121 is a prime.

It is not a weakly prime, because it can be changed into another prime (49689839) 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, 24844944 + 24844945.

It is an arithmetic number, because the mean of its divisors is an integer number (24844945).

Almost surely, 2^49689889 is an apocalyptic number.

It is an amenable number.

49689889 is a deficient number, since it is larger than the sum of its proper divisors (1).

49689889 is an equidigital number, since it uses as much as digits as its factorization.

49689889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8957952, while the sum is 61.

The square root of 49689889 is about 7049.1055460959. The cubic root of 49689889 is about 367.6399306700.

The spelling of 49689889 in words is "forty-nine million, six hundred eighty-nine thousand, eight hundred eighty-nine".