387390859 has 2 divisors, whose sum is σ = 387390860. Its totient is φ = 387390858.

The previous prime is 387390823. The next prime is 387390869. The reversal of 387390859 is 958093783.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 387390859 - 2¹¹ = 387388811 is a prime.

It is a super-3 number, since 3×387390859³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (387390869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193695429 + 193695430.

It is an arithmetic number, because the mean of its divisors is an integer number (193695430).

Almost surely, 2^387390859 is an apocalyptic number.

387390859 is a deficient number, since it is larger than the sum of its proper divisors (1).

387390859 is an equidigital number, since it uses as much as digits as its factorization.

387390859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 387390859 is about 19682.2473056305. The cubic root of 387390859 is about 728.9814148354.

The spelling of 387390859 in words is "three hundred eighty-seven million, three hundred ninety thousand, eight hundred fifty-nine".