390077773 has 2 divisors, whose sum is σ = 390077774. Its totient is φ = 390077772.

The previous prime is 390077761. The next prime is 390077803. The reversal of 390077773 is 377770093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211935364 + 178142409 = 14558^2 + 13347^2 .

It is a cyclic number.

It is not a de Polignac number, because 390077773 - 2⁵ = 390077741 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390077713) 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, 195038886 + 195038887.

It is an arithmetic number, because the mean of its divisors is an integer number (195038887).

Almost surely, 2^390077773 is an apocalyptic number.

It is an amenable number.

390077773 is a deficient number, since it is larger than the sum of its proper divisors (1).

390077773 is an equidigital number, since it uses as much as digits as its factorization.

390077773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194481, while the sum is 43.

The square root of 390077773 is about 19750.3866544430. The cubic root of 390077773 is about 730.6629200505.

The spelling of 390077773 in words is "three hundred ninety million, seventy-seven thousand, seven hundred seventy-three".