40204689 has 8 divisors (see below), whose sum is σ = 61264320. Its totient is φ = 22974096.

The previous prime is 40204663. The next prime is 40204691. The reversal of 40204689 is 98640204.

40204689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40204689 - 2⁷ = 40204561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40204639) 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, 957234 + ... + 957275.

It is an arithmetic number, because the mean of its divisors is an integer number (7658040).

Almost surely, 2^40204689 is an apocalyptic number.

It is an amenable number.

40204689 is a deficient number, since it is larger than the sum of its proper divisors (21059631).

40204689 is a wasteful number, since it uses less digits than its factorization.

40204689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914519.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 40204689 is about 6340.7167575914. The cubic root of 40204689 is about 342.5775525451.

The spelling of 40204689 in words is "forty million, two hundred four thousand, six hundred eighty-nine".