40008529 has 8 divisors (see below), whose sum is σ = 44007840. Its totient is φ = 36370180.

The previous prime is 40008503. The next prime is 40008541. The reversal of 40008529 is 92580004.

It is a happy number.

40008529 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 40008529 - 2¹¹ = 40006481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40008497 and 40008506.

It is not an unprimeable number, because it can be changed into a prime (40008589) 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 7 ways as a sum of consecutive naturals, for example, 13699 + ... + 16360.

It is an arithmetic number, because the mean of its divisors is an integer number (5500980).

Almost surely, 2^40008529 is an apocalyptic number.

It is an amenable number.

40008529 is a deficient number, since it is larger than the sum of its proper divisors (3999311).

40008529 is an equidigital number, since it uses as much as digits as its factorization.

40008529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30092 (or 30070 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 40008529 is about 6325.2295610515. The cubic root of 40008529 is about 342.0194949160.

The spelling of 40008529 in words is "forty million, eight thousand, five hundred twenty-nine".