387973093 has 2 divisors, whose sum is σ = 387973094. Its totient is φ = 387973092.

The previous prime is 387973063. The next prime is 387973121. The reversal of 387973093 is 390379783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343657444 + 44315649 = 18538^2 + 6657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387973093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387973043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193986546 + 193986547.

It is an arithmetic number, because the mean of its divisors is an integer number (193986547).

Almost surely, 2^387973093 is an apocalyptic number.

It is an amenable number.

387973093 is a deficient number, since it is larger than the sum of its proper divisors (1).

387973093 is an equidigital number, since it uses as much as digits as its factorization.

387973093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 49.

The square root of 387973093 is about 19697.0325937690. The cubic root of 387973093 is about 729.3464426400.

The spelling of 387973093 in words is "three hundred eighty-seven million, nine hundred seventy-three thousand, ninety-three".