481649977 has 2 divisors, whose sum is σ = 481649978. Its totient is φ = 481649976.

The previous prime is 481649953. The next prime is 481649999. The reversal of 481649977 is 779946184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 296390656 + 185259321 = 17216^2 + 13611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-481649977 is a prime.

It is not a weakly prime, because it can be changed into another prime (481629977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240824988 + 240824989.

It is an arithmetic number, because the mean of its divisors is an integer number (240824989).

Almost surely, 2^481649977 is an apocalyptic number.

It is an amenable number.

481649977 is a deficient number, since it is larger than the sum of its proper divisors (1).

481649977 is an equidigital number, since it uses as much as digits as its factorization.

481649977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 55.

The square root of 481649977 is about 21946.5253969734. The cubic root of 481649977 is about 783.8696468904.

The spelling of 481649977 in words is "four hundred eighty-one million, six hundred forty-nine thousand, nine hundred seventy-seven".