40231439 has 8 divisors (see below), whose sum is σ = 43428960. Its totient is φ = 37154656.

The previous prime is 40231427. The next prime is 40231447. The reversal of 40231439 is 93413204.

40231439 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 a cyclic number.

It is not a de Polignac number, because 40231439 - 2⁸ = 40231183 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 (40231409) 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, 29492 + ... + 30825.

It is an arithmetic number, because the mean of its divisors is an integer number (5428620).

Almost surely, 2^40231439 is an apocalyptic number.

40231439 is a deficient number, since it is larger than the sum of its proper divisors (3197521).

40231439 is a wasteful number, since it uses less digits than its factorization.

40231439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60369.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 40231439 is about 6342.8257898196. The cubic root of 40231439 is about 342.6535131533.

The spelling of 40231439 in words is "forty million, two hundred thirty-one thousand, four hundred thirty-nine".