40858129 has 8 divisors (see below), whose sum is σ = 45518760. Its totient is φ = 36414336.

The previous prime is 40858091. The next prime is 40858163. The reversal of 40858129 is 92185804.

40858129 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 4 ways, for example, as 725904 + 40132225 = 852^2 + 6335^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40858129 - 2¹³ = 40849937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40858199) 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, 53812 + ... + 54565.

It is an arithmetic number, because the mean of its divisors is an integer number (5689845).

Almost surely, 2^40858129 is an apocalyptic number.

It is an amenable number.

40858129 is a deficient number, since it is larger than the sum of its proper divisors (4660631).

40858129 is a wasteful number, since it uses less digits than its factorization.

40858129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108419.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 40858129 is about 6392.0363734885. The cubic root of 40858129 is about 344.4235391829.

The spelling of 40858129 in words is "forty million, eight hundred fifty-eight thousand, one hundred twenty-nine".