439889121 has 72 divisors (see below), whose sum is σ = 795300480. Its totient is φ = 232860096.

The previous prime is 439889113. The next prime is 439889129. The reversal of 439889121 is 121988934.

It is an interprime number because it is at equal distance from previous prime (439889113) and next prime (439889129).

It is not a de Polignac number, because 439889121 - 2³ = 439889113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (439889129) 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 71 ways as a sum of consecutive naturals, for example, 393255 + ... + 394371.

It is an arithmetic number, because the mean of its divisors is an integer number (11045840).

Almost surely, 2^439889121 is an apocalyptic number.

It is an amenable number.

439889121 is a deficient number, since it is larger than the sum of its proper divisors (355411359).

439889121 is a wasteful number, since it uses less digits than its factorization.

439889121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203 (or 1193 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 439889121 is about 20973.5338224153. The cubic root of 439889121 is about 760.5265977598.

The spelling of 439889121 in words is "four hundred thirty-nine million, eight hundred eighty-nine thousand, one hundred twenty-one".