2045439 has 32 divisors (see below), whose sum is σ = 3386880. Its totient is φ = 1209600.

The previous prime is 2045437. The next prime is 2045441. The reversal of 2045439 is 9345402.

It is an interprime number because it is at equal distance from previous prime (2045437) and next prime (2045441).

It is not a de Polignac number, because 2045439 - 2¹ = 2045437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21039 + ... + 21135.

It is an arithmetic number, because the mean of its divisors is an integer number (105840).

2^2045439 is an apocalyptic number.

2045439 is a deficient number, since it is larger than the sum of its proper divisors (1341441).

2045439 is a wasteful number, since it uses less digits than its factorization.

2045439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2045439 is about 1430.1884491213. The cubic root of 2045439 is about 126.9391280400.

2045439 divided by its sum of digits (27) gives a palindrome (75757).

The spelling of 2045439 in words is "two million, forty-five thousand, four hundred thirty-nine".