2009432 has 8 divisors (see below), whose sum is σ = 3767700. Its totient is φ = 1004712.

The previous prime is 2009407. The next prime is 2009437. The reversal of 2009432 is 2349002.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125582 + ... + 125597.

2^2009432 is an apocalyptic number.

It is an amenable number.

2009432 is a deficient number, since it is larger than the sum of its proper divisors (1758268).

2009432 is a wasteful number, since it uses less digits than its factorization.

2009432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251185 (or 251181 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2009432 is about 1417.5443555670. The cubic root of 2009432 is about 126.1898540420.

The spelling of 2009432 in words is "two million, nine thousand, four hundred thirty-two".