940438869129 has 14 divisors (see below), whose sum is σ = 1410013284986. Its totient is φ = 626959245600.

The previous prime is 940438869107. The next prime is 940438869169. The reversal of 940438869129 is 921968834049.

940438869129 is a `hidden beast` number, since 94 + 0 + 438 + 8 + 6 + 91 + 29 = 666.

940438869129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 509971659129 + 430467210000 = 714123^2 + 656100^2 .

It is not a de Polignac number, because 940438869129 - 2¹² = 940438865033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (940438869169) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 645019072 + ... + 645020529.

Almost surely, 2^940438869129 is an apocalyptic number.

It is an amenable number.

940438869129 is a deficient number, since it is larger than the sum of its proper divisors (469574415857).

940438869129 is an equidigital number, since it uses as much as digits as its factorization.

940438869129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290039619 (or 1290039604 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 63.

The spelling of 940438869129 in words is "nine hundred forty billion, four hundred thirty-eight million, eight hundred sixty-nine thousand, one hundred twenty-nine".