40260729 has 16 divisors (see below), whose sum is σ = 56891520. Its totient is φ = 25280640.

The previous prime is 40260713. The next prime is 40260739. The reversal of 40260729 is 92706204.

It is a happy number.

40260729 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 40260729 - 2⁴ = 40260713 is a prime.

It is a super-2 number, since 2×40260729² = 3241852599222882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40260696 and 40260705.

It is not an unprimeable number, because it can be changed into a prime (40260739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2077 + ... + 9210.

It is an arithmetic number, because the mean of its divisors is an integer number (3555720).

Almost surely, 2^40260729 is an apocalyptic number.

It is an amenable number.

40260729 is a deficient number, since it is larger than the sum of its proper divisors (16630791).

40260729 is a wasteful number, since it uses less digits than its factorization.

40260729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11360.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 40260729 is about 6345.1342775390. The cubic root of 40260729 is about 342.7366478611.

The spelling of 40260729 in words is "forty million, two hundred sixty thousand, seven hundred twenty-nine".