1000439121 has 16 divisors (see below), whose sum is σ = 1471538880. Its totient is φ = 599512320.

The previous prime is 1000439107. The next prime is 1000439131. The reversal of 1000439121 is 1219340001.

It is not a de Polignac number, because 1000439121 - 2⁹ = 1000438609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000439131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167380 + ... + 173253.

It is an arithmetic number, because the mean of its divisors is an integer number (91971180).

Almost surely, 2^1000439121 is an apocalyptic number.

1000439121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000439121 is a deficient number, since it is larger than the sum of its proper divisors (471099759).

1000439121 is a wasteful number, since it uses less digits than its factorization.

1000439121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340736.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1000439121 is about 31629.7189522765. The cubic root of 1000439121 is about 1000.1463522466.

Adding to 1000439121 its reverse (1219340001), we get a palindrome (2219779122).

The spelling of 1000439121 in words is "one billion, four hundred thirty-nine thousand, one hundred twenty-one".