2387389 has 4 divisors (see below), whose sum is σ = 2445660. Its totient is φ = 2329120.

The previous prime is 2387383. The next prime is 2387393. The reversal of 2387389 is 9837832.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 736164 + 1651225 = 858^2 + 1285^2 .

It is a cyclic number.

It is not a de Polignac number, because 2387389 - 2⁹ = 2386877 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2387383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29074 + ... + 29155.

It is an arithmetic number, because the mean of its divisors is an integer number (611415).

2^2387389 is an apocalyptic number.

It is an amenable number.

2387389 is a deficient number, since it is larger than the sum of its proper divisors (58271).

2387389 is an equidigital number, since it uses as much as digits as its factorization.

2387389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58270.

The product of its digits is 72576, while the sum is 40.

The square root of 2387389 is about 1545.1177948623. The cubic root of 2387389 is about 133.6516719878.

The spelling of 2387389 in words is "two million, three hundred eighty-seven thousand, three hundred eighty-nine".