4066949477 has 2 divisors, whose sum is σ = 4066949478. Its totient is φ = 4066949476.

The previous prime is 4066949407. The next prime is 4066949521. The reversal of 4066949477 is 7749496604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3964717156 + 102232321 = 62966^2 + 10111^2 .

It is a cyclic number.

It is not a de Polignac number, because 4066949477 - 2²⁴ = 4050172261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4066949407) 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, 2033474738 + 2033474739.

It is an arithmetic number, because the mean of its divisors is an integer number (2033474739).

Almost surely, 2^4066949477 is an apocalyptic number.

It is an amenable number.

4066949477 is a deficient number, since it is larger than the sum of its proper divisors (1).

4066949477 is an equidigital number, since it uses as much as digits as its factorization.

4066949477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The square root of 4066949477 is about 63772.6389370865. The cubic root of 4066949477 is about 1596.2084017795.

The spelling of 4066949477 in words is "four billion, sixty-six million, nine hundred forty-nine thousand, four hundred seventy-seven".