387039073 has 2 divisors, whose sum is σ = 387039074. Its totient is φ = 387039072.

The previous prime is 387039047. The next prime is 387039109. The reversal of 387039073 is 370930783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386830224 + 208849 = 19668^2 + 457^2 .

It is an emirp because it is prime and its reverse (370930783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 387039073 - 2⁵ = 387039041 is a prime.

It is not a weakly prime, because it can be changed into another prime (387039013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193519536 + 193519537.

It is an arithmetic number, because the mean of its divisors is an integer number (193519537).

Almost surely, 2^387039073 is an apocalyptic number.

It is an amenable number.

387039073 is a deficient number, since it is larger than the sum of its proper divisors (1).

387039073 is an equidigital number, since it uses as much as digits as its factorization.

387039073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 387039073 is about 19673.3086439470. The cubic root of 387039073 is about 728.7606876168.

The spelling of 387039073 in words is "three hundred eighty-seven million, thirty-nine thousand, seventy-three".