939955605121 has 4 divisors (see below), whose sum is σ = 1012259882452. Its totient is φ = 867651327792.

The previous prime is 939955605119. The next prime is 939955605131. The reversal of 939955605121 is 121506559939.

939955605121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 457158538225 + 482797066896 = 676135^2 + 694836^2 .

It is a cyclic number.

It is not a de Polignac number, because 939955605121 - 2¹ = 939955605119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (939955605131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36152138646 + ... + 36152138671.

It is an arithmetic number, because the mean of its divisors is an integer number (253064970613).

Almost surely, 2^939955605121 is an apocalyptic number.

It is an amenable number.

939955605121 is a deficient number, since it is larger than the sum of its proper divisors (72304277331).

939955605121 is a wasteful number, since it uses less digits than its factorization.

939955605121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72304277330.

The product of its (nonzero) digits is 3280500, while the sum is 55.

The spelling of 939955605121 in words is "nine hundred thirty-nine billion, nine hundred fifty-five million, six hundred five thousand, one hundred twenty-one".