40858689 has 4 divisors (see below), whose sum is σ = 54478256. Its totient is φ = 27239124.

The previous prime is 40858687. The next prime is 40858711. The reversal of 40858689 is 98685804.

40858689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40858689 - 2¹ = 40858687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40858687) 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 3 ways as a sum of consecutive naturals, for example, 6809779 + ... + 6809784.

It is an arithmetic number, because the mean of its divisors is an integer number (13619564).

Almost surely, 2^40858689 is an apocalyptic number.

It is an amenable number.

40858689 is a deficient number, since it is larger than the sum of its proper divisors (13619567).

40858689 is a wasteful number, since it uses less digits than its factorization.

40858689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13619566.

The product of its (nonzero) digits is 552960, while the sum is 48.

The square root of 40858689 is about 6392.0801778451. The cubic root of 40858689 is about 344.4251127278.

The spelling of 40858689 in words is "forty million, eight hundred fifty-eight thousand, six hundred eighty-nine".