2439021 has 8 divisors (see below), whose sum is σ = 3502240. Its totient is φ = 1500912.

The previous prime is 2439013. The next prime is 2439037. The reversal of 2439021 is 1209342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2439021 - 2³ = 2439013 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2439061) 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 7 ways as a sum of consecutive naturals, for example, 31231 + ... + 31308.

It is an arithmetic number, because the mean of its divisors is an integer number (437780).

2^2439021 is an apocalyptic number.

It is an amenable number.

2439021 is a deficient number, since it is larger than the sum of its proper divisors (1063219).

2439021 is a wasteful number, since it uses less digits than its factorization.

2439021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62555.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2439021 is about 1561.7365334780. The cubic root of 2439021 is about 134.6083021873.

The spelling of 2439021 in words is "two million, four hundred thirty-nine thousand, twenty-one".