387220859 has 2 divisors, whose sum is σ = 387220860. Its totient is φ = 387220858.

The previous prime is 387220853. The next prime is 387220861. The reversal of 387220859 is 958022783.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 387220859 - 2¹⁶ = 387155323 is a prime.

It is a Sophie Germain prime.

Together with 387220861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (387220853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193610429 + 193610430.

It is an arithmetic number, because the mean of its divisors is an integer number (193610430).

Almost surely, 2^387220859 is an apocalyptic number.

387220859 is a deficient number, since it is larger than the sum of its proper divisors (1).

387220859 is an equidigital number, since it uses as much as digits as its factorization.

387220859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 387220859 is about 19677.9282192003. The cubic root of 387220859 is about 728.8747654658.

The spelling of 387220859 in words is "three hundred eighty-seven million, two hundred twenty thousand, eight hundred fifty-nine".