40429440429 has 24 divisors (see below), whose sum is σ = 62745941088. Its totient is φ = 23088149280.

The previous prime is 40429440413. The next prime is 40429440431. The reversal of 40429440429 is 92404492404.

40429440429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40429440429 - 2⁴ = 40429440413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40429440449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153454 + ... + 323120.

It is an arithmetic number, because the mean of its divisors is an integer number (2614414212).

Almost surely, 2^40429440429 is an apocalyptic number.

40429440429 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

40429440429 is a deficient number, since it is larger than the sum of its proper divisors (22316500659).

40429440429 is a wasteful number, since it uses less digits than its factorization.

40429440429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171305 (or 171298 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 40429440429 in words is "forty billion, four hundred twenty-nine million, four hundred forty thousand, four hundred twenty-nine".