1009432 has 32 divisors (see below), whose sum is σ = 2070000. Its totient is φ = 459648.

The previous prime is 1009417. The next prime is 1009433. The reversal of 1009432 is 2349001.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009433) 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 in 7 ways as a sum of consecutive naturals, for example, 4294 + ... + 4522.

2^1009432 is an apocalyptic number.

It is an amenable number.

1009432 is an abundant number, since it is smaller than the sum of its proper divisors (1060568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1009432 is a wasteful number, since it uses less digits than its factorization.

1009432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1009432 is about 1004.7049318083. The cubic root of 1009432 is about 100.3134166737.

It can be divided in two parts, 1009 and 432, that added together give a palindrome (1441).

The spelling of 1009432 in words is "one million, nine thousand, four hundred thirty-two".