387777073 has 2 divisors, whose sum is σ = 387777074. Its totient is φ = 387777072.

The previous prime is 387777059. The next prime is 387777121. The reversal of 387777073 is 370777783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387774864 + 2209 = 19692^2 + 47^2 .

It is a cyclic number.

It is not a de Polignac number, because 387777073 - 2⁹ = 387776561 is a prime.

It is not a weakly prime, because it can be changed into another prime (387777043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193888536 + 193888537.

It is an arithmetic number, because the mean of its divisors is an integer number (193888537).

Almost surely, 2^387777073 is an apocalyptic number.

It is an amenable number.

387777073 is a deficient number, since it is larger than the sum of its proper divisors (1).

387777073 is an equidigital number, since it uses as much as digits as its factorization.

387777073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1210104, while the sum is 49.

The square root of 387777073 is about 19692.0560886871. The cubic root of 387777073 is about 729.2235899848.

The spelling of 387777073 in words is "three hundred eighty-seven million, seven hundred seventy-seven thousand, seventy-three".