771882949 has 2 divisors, whose sum is σ = 771882950. Its totient is φ = 771882948.

The previous prime is 771882941. The next prime is 771882953. The reversal of 771882949 is 949288177.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 721728225 + 50154724 = 26865^2 + 7082^2 .

It is a cyclic number.

It is not a de Polignac number, because 771882949 - 2³ = 771882941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 771882949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (771882941) 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, 385941474 + 385941475.

It is an arithmetic number, because the mean of its divisors is an integer number (385941475).

Almost surely, 2^771882949 is an apocalyptic number.

It is an amenable number.

771882949 is a deficient number, since it is larger than the sum of its proper divisors (1).

771882949 is an equidigital number, since it uses as much as digits as its factorization.

771882949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 55.

The square root of 771882949 is about 27782.7815202150. The cubic root of 771882949 is about 917.3121568986.

The spelling of 771882949 in words is "seven hundred seventy-one million, eight hundred eighty-two thousand, nine hundred forty-nine".