386947903 has 2 divisors, whose sum is σ = 386947904. Its totient is φ = 386947902.

The previous prime is 386947871. The next prime is 386947907. The reversal of 386947903 is 309749683.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 386947903 - 2⁵ = 386947871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386947907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193473951 + 193473952.

It is an arithmetic number, because the mean of its divisors is an integer number (193473952).

Almost surely, 2^386947903 is an apocalyptic number.

386947903 is a deficient number, since it is larger than the sum of its proper divisors (1).

386947903 is an equidigital number, since it uses as much as digits as its factorization.

386947903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 386947903 is about 19670.9914086708. The cubic root of 386947903 is about 728.7034614140.

The spelling of 386947903 in words is "three hundred eighty-six million, nine hundred forty-seven thousand, nine hundred three".