64489849 has 2 divisors, whose sum is σ = 64489850. Its totient is φ = 64489848.

The previous prime is 64489811. The next prime is 64489883. The reversal of 64489849 is 94898446.

64489849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62299449 + 2190400 = 7893^2 + 1480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64489849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64489796 and 64489805.

It is not a weakly prime, because it can be changed into another prime (64489549) 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, 32244924 + 32244925.

It is an arithmetic number, because the mean of its divisors is an integer number (32244925).

Almost surely, 2^64489849 is an apocalyptic number.

It is an amenable number.

64489849 is a deficient number, since it is larger than the sum of its proper divisors (1).

64489849 is an equidigital number, since it uses as much as digits as its factorization.

64489849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 52.

The square root of 64489849 is about 8030.5572035818. The cubic root of 64489849 is about 401.0179261187.

The spelling of 64489849 in words is "sixty-four million, four hundred eighty-nine thousand, eight hundred forty-nine".