386873489 has 2 divisors, whose sum is σ = 386873490. Its totient is φ = 386873488.

The previous prime is 386873453. The next prime is 386873519. The reversal of 386873489 is 984378683.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 374035600 + 12837889 = 19340^2 + 3583^2 .

It is a cyclic number.

It is not a de Polignac number, because 386873489 - 2²⁰ = 385824913 is a prime.

It is not a weakly prime, because it can be changed into another prime (386873449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193436744 + 193436745.

It is an arithmetic number, because the mean of its divisors is an integer number (193436745).

Almost surely, 2^386873489 is an apocalyptic number.

It is an amenable number.

386873489 is a deficient number, since it is larger than the sum of its proper divisors (1).

386873489 is an equidigital number, since it uses as much as digits as its factorization.

386873489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 56.

The square root of 386873489 is about 19669.0998523064. The cubic root of 386873489 is about 728.6567460677.

The spelling of 386873489 in words is "three hundred eighty-six million, eight hundred seventy-three thousand, four hundred eighty-nine".