984138009 has 8 divisors (see below), whose sum is σ = 1331769120. Its totient is φ = 646299456.

The previous prime is 984137953. The next prime is 984138011. The reversal of 984138009 is 900831489.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-984138009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (984138409) 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 7 ways as a sum of consecutive naturals, for example, 2447904 + ... + 2448305.

It is an arithmetic number, because the mean of its divisors is an integer number (166471140).

Almost surely, 2^984138009 is an apocalyptic number.

It is an amenable number.

984138009 is a deficient number, since it is larger than the sum of its proper divisors (347631111).

984138009 is a wasteful number, since it uses less digits than its factorization.

984138009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4896279.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 984138009 is about 31370.9739887049. The cubic root of 984138009 is about 994.6844648157.

The spelling of 984138009 in words is "nine hundred eighty-four million, one hundred thirty-eight thousand, nine".