389087 has 4 divisors (see below), whose sum is σ = 390336. Its totient is φ = 387840.

The previous prime is 389083. The next prime is 389089. The reversal of 389087 is 780983.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 389087 - 2² = 389083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287 + ... + 927.

It is an arithmetic number, because the mean of its divisors is an integer number (97584).

389087 is a Friedman number, since it can be written as 70+(9+8*8)^3, using all its digits and the basic arithmetic operations.

2³⁸⁹⁰⁸⁷ is an apocalyptic number.

389087 is a deficient number, since it is larger than the sum of its proper divisors (1249).

389087 is an equidigital number, since it uses as much as digits as its factorization.

389087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 389087 is about 623.7683865026. The cubic root of 389087 is about 73.0043782950.

The spelling of 389087 in words is "three hundred eighty-nine thousand, eighty-seven".