2489356777 has 2 divisors, whose sum is σ = 2489356778. Its totient is φ = 2489356776.

The previous prime is 2489356729. The next prime is 2489356783. The reversal of 2489356777 is 7776539842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2153331216 + 336025561 = 46404^2 + 18331^2 .

It is a cyclic number.

It is not a de Polignac number, because 2489356777 - 2¹⁵ = 2489324009 is a prime.

It is not a weakly prime, because it can be changed into another prime (2489356477) 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, 1244678388 + 1244678389.

It is an arithmetic number, because the mean of its divisors is an integer number (1244678389).

Almost surely, 2^2489356777 is an apocalyptic number.

It is an amenable number.

2489356777 is a deficient number, since it is larger than the sum of its proper divisors (1).

2489356777 is an equidigital number, since it uses as much as digits as its factorization.

2489356777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17781120, while the sum is 58.

The square root of 2489356777 is about 49893.4542500316. The cubic root of 2489356777 is about 1355.2800584867.

The spelling of 2489356777 in words is "two billion, four hundred eighty-nine million, three hundred fifty-six thousand, seven hundred seventy-seven".