773449081 has 2 divisors, whose sum is σ = 773449082. Its totient is φ = 773449080.

The previous prime is 773449063. The next prime is 773449091. The reversal of 773449081 is 180944377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 745781481 + 27667600 = 27309^2 + 5260^2 .

It is a cyclic number.

It is not a de Polignac number, because 773449081 - 2⁵ = 773449049 is a prime.

It is a super-2 number, since 2×773449081² = 1196446961799489122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (773449091) 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, 386724540 + 386724541.

It is an arithmetic number, because the mean of its divisors is an integer number (386724541).

Almost surely, 2^773449081 is an apocalyptic number.

It is an amenable number.

773449081 is a deficient number, since it is larger than the sum of its proper divisors (1).

773449081 is an equidigital number, since it uses as much as digits as its factorization.

773449081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 773449081 is about 27810.9525367255. The cubic root of 773449081 is about 917.9321392365.

The spelling of 773449081 in words is "seven hundred seventy-three million, four hundred forty-nine thousand, eighty-one".