476739649 has 2 divisors, whose sum is σ = 476739650. Its totient is φ = 476739648.

The previous prime is 476739643. The next prime is 476739661. The reversal of 476739649 is 946937674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253446400 + 223293249 = 15920^2 + 14943^2 .

It is a cyclic number.

It is not a de Polignac number, because 476739649 - 2⁵ = 476739617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 476739649.

It is not a weakly prime, because it can be changed into another prime (476739643) 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, 238369824 + 238369825.

It is an arithmetic number, because the mean of its divisors is an integer number (238369825).

Almost surely, 2^476739649 is an apocalyptic number.

It is an amenable number.

476739649 is a deficient number, since it is larger than the sum of its proper divisors (1).

476739649 is an equidigital number, since it uses as much as digits as its factorization.

476739649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 55.

The square root of 476739649 is about 21834.3685276218. The cubic root of 476739649 is about 781.1967433435.

The spelling of 476739649 in words is "four hundred seventy-six million, seven hundred thirty-nine thousand, six hundred forty-nine".