2389021 has 2 divisors, whose sum is σ = 2389022. Its totient is φ = 2389020.

The previous prime is 2389001. The next prime is 2389031. The reversal of 2389021 is 1209832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2220100 + 168921 = 1490^2 + 411^2 .

It is a cyclic number.

It is not a de Polignac number, because 2389021 - 2¹⁷ = 2257949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2389001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1194510 + 1194511.

It is an arithmetic number, because the mean of its divisors is an integer number (1194511).

2^2389021 is an apocalyptic number.

It is an amenable number.

2389021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2389021 is an equidigital number, since it uses as much as digits as its factorization.

2389021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2389021 is about 1545.6458197142. The cubic root of 2389021 is about 133.6821194551.

The spelling of 2389021 in words is "two million, three hundred eighty-nine thousand, twenty-one".