1009239 has 32 divisors (see below), whose sum is σ = 1783296. Its totient is φ = 491520.

The previous prime is 1009237. The next prime is 1009243. The reversal of 1009239 is 9329001.

It is a happy number.

It is not a de Polignac number, because 1009239 - 2¹ = 1009237 is a prime.

1009239 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009237) 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 31 ways as a sum of consecutive naturals, for example, 3799 + ... + 4055.

It is an arithmetic number, because the mean of its divisors is an integer number (55728).

2^1009239 is an apocalyptic number.

1009239 is a deficient number, since it is larger than the sum of its proper divisors (774057).

1009239 is a wasteful number, since it uses less digits than its factorization.

1009239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 1009239 is about 1004.6088791166. The cubic root of 1009239 is about 100.3070230703.

It can be divided in two parts, 100 and 9239, that added together give a palindrome (9339).

The spelling of 1009239 in words is "one million, nine thousand, two hundred thirty-nine".