1009939 has 6 divisors (see below), whose sum is σ = 1174884. Its totient is φ = 865620.

The previous prime is 1009937. The next prime is 1009951. The reversal of 1009939 is 9399001.

It is not a de Polignac number, because 1009939 - 2¹ = 1009937 is a prime.

It is a Duffinian number.

1009939 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1009939.

It is not an unprimeable number, because it can be changed into a prime (1009937) 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 5 ways as a sum of consecutive naturals, for example, 10257 + ... + 10354.

It is an arithmetic number, because the mean of its divisors is an integer number (195814).

2^1009939 is an apocalyptic number.

1009939 is a deficient number, since it is larger than the sum of its proper divisors (164945).

1009939 is an equidigital number, since it uses as much as digits as its factorization.

1009939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20625 (or 20618 counting only the distinct ones).

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 1009939 is about 1004.9572130195. The cubic root of 1009939 is about 100.3302084238.

The spelling of 1009939 in words is "one million, nine thousand, nine hundred thirty-nine".