386261489 has 2 divisors, whose sum is σ = 386261490. Its totient is φ = 386261488.

The previous prime is 386261461. The next prime is 386261501. The reversal of 386261489 is 984162683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377019889 + 9241600 = 19417^2 + 3040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386261489 is a prime.

It is not a weakly prime, because it can be changed into another prime (386261419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193130744 + 193130745.

It is an arithmetic number, because the mean of its divisors is an integer number (193130745).

Almost surely, 2^386261489 is an apocalyptic number.

It is an amenable number.

386261489 is a deficient number, since it is larger than the sum of its proper divisors (1).

386261489 is an equidigital number, since it uses as much as digits as its factorization.

386261489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 47.

The square root of 386261489 is about 19653.5362975725. The cubic root of 386261489 is about 728.2723195536.

The spelling of 386261489 in words is "three hundred eighty-six million, two hundred sixty-one thousand, four hundred eighty-nine".