862949977 has 2 divisors, whose sum is σ = 862949978. Its totient is φ = 862949976.

The previous prime is 862949953. The next prime is 862949987. The reversal of 862949977 is 779949268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 861070336 + 1879641 = 29344^2 + 1371^2 .

It is a cyclic number.

It is not a de Polignac number, because 862949977 - 2¹⁹ = 862425689 is a prime.

It is not a weakly prime, because it can be changed into another prime (862949987) 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, 431474988 + 431474989.

It is an arithmetic number, because the mean of its divisors is an integer number (431474989).

Almost surely, 2^862949977 is an apocalyptic number.

It is an amenable number.

862949977 is a deficient number, since it is larger than the sum of its proper divisors (1).

862949977 is an equidigital number, since it uses as much as digits as its factorization.

862949977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 61.

The square root of 862949977 is about 29376.0102294372. The cubic root of 862949977 is about 952.0546396769.

The spelling of 862949977 in words is "eight hundred sixty-two million, nine hundred forty-nine thousand, nine hundred seventy-seven".