2147389 has 4 divisors (see below), whose sum is σ = 2273724. Its totient is φ = 2021056.

The previous prime is 2147381. The next prime is 2147407. The reversal of 2147389 is 9837412.

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 870489 + 1276900 = 933^2 + 1130^2 .

It is a cyclic number.

It is not a de Polignac number, because 2147389 - 2³ = 2147381 is a prime.

It is a super-2 number, since 2×2147389² = 9222559034642, which contains 22 as substring.

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 (2147381) 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, 63142 + ... + 63175.

It is an arithmetic number, because the mean of its divisors is an integer number (568431).

2^2147389 is an apocalyptic number.

It is an amenable number.

2147389 is a deficient number, since it is larger than the sum of its proper divisors (126335).

2147389 is a wasteful number, since it uses less digits than its factorization.

2147389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126334.

The product of its digits is 12096, while the sum is 34.

The square root of 2147389 is about 1465.3972157746. The cubic root of 2147389 is about 129.0140200695.

The spelling of 2147389 in words is "two million, one hundred forty-seven thousand, three hundred eighty-nine".