439885971121 has 3 divisors (see below), whose sum is σ = 439886634361. Its totient is φ = 439885307882.

The previous prime is 439885971101. The next prime is 439885971149. The reversal of 439885971121 is 121179588934.

The square root of 439885971121 is 663239.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 439885971121 - 2¹⁷ = 439885840049 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (439885971101) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 331620 + ... + 994858.

Almost surely, 2^439885971121 is an apocalyptic number.

439885971121 is the 663239-th square number.

439885971121 is the 331620-th centered octagonal number.

It is an amenable number.

439885971121 is a deficient number, since it is larger than the sum of its proper divisors (663240).

439885971121 is an frugal number, since it uses more digits than its factorization.

439885971121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326478 (or 663239 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 58.

The spelling of 439885971121 in words is "four hundred thirty-nine billion, eight hundred eighty-five million, nine hundred seventy-one thousand, one hundred twenty-one".