387879257 has 2 divisors, whose sum is σ = 387879258. Its totient is φ = 387879256.

The previous prime is 387879211. The next prime is 387879301. The reversal of 387879257 is 752978783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370331536 + 17547721 = 19244^2 + 4189^2 .

It is a cyclic number.

It is not a de Polignac number, because 387879257 - 2¹⁶ = 387813721 is a prime.

It is not a weakly prime, because it can be changed into another prime (387879757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193939628 + 193939629.

It is an arithmetic number, because the mean of its divisors is an integer number (193939629).

Almost surely, 2^387879257 is an apocalyptic number.

It is an amenable number.

387879257 is a deficient number, since it is larger than the sum of its proper divisors (1).

387879257 is an equidigital number, since it uses as much as digits as its factorization.

387879257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5927040, while the sum is 56.

The square root of 387879257 is about 19694.6504665607. The cubic root of 387879257 is about 729.2876374700.

The spelling of 387879257 in words is "three hundred eighty-seven million, eight hundred seventy-nine thousand, two hundred fifty-seven".