40678589 has 4 divisors (see below), whose sum is σ = 46489824. Its totient is φ = 34867356.

The previous prime is 40678579. The next prime is 40678591. The reversal of 40678589 is 98587604.

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 a cyclic number.

It is not a de Polignac number, because 40678589 - 2²⁰ = 39630013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40678529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2905607 + ... + 2905620.

It is an arithmetic number, because the mean of its divisors is an integer number (11622456).

Almost surely, 2^40678589 is an apocalyptic number.

It is an amenable number.

40678589 is a deficient number, since it is larger than the sum of its proper divisors (5811235).

40678589 is an equidigital number, since it uses as much as digits as its factorization.

40678589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5811234.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 40678589 is about 6377.9768735862. The cubic root of 40678589 is about 343.9183063850.

The spelling of 40678589 in words is "forty million, six hundred seventy-eight thousand, five hundred eighty-nine".