39509040429 has 12 divisors (see below), whose sum is σ = 58145380956. Its totient is φ = 25842390912.

The previous prime is 39509040367. The next prime is 39509040433. The reversal of 39509040429 is 92404090593.

It is a happy number.

39509040429 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 2 ways, for example, as 18607688100 + 20901352329 = 136410^2 + 144573^2 .

It is not a de Polignac number, because 39509040429 - 2¹¹ = 39509038381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39509040029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41413612 + ... + 41414565.

It is an arithmetic number, because the mean of its divisors is an integer number (4845448413).

Almost surely, 2^39509040429 is an apocalyptic number.

It is an amenable number.

39509040429 is a deficient number, since it is larger than the sum of its proper divisors (18636340527).

39509040429 is a wasteful number, since it uses less digits than its factorization.

39509040429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82828236 (or 82828233 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 39509040429 in words is "thirty-nine billion, five hundred nine million, forty thousand, four hundred twenty-nine".