40659428438 has 8 divisors (see below), whose sum is σ = 61393044720. Its totient is φ = 20195080200.

The previous prime is 40659428437. The next prime is 40659428441. The reversal of 40659428438 is 83482495604.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40659428438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40659428437) 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, 67316633 + ... + 67317236.

It is an arithmetic number, because the mean of its divisors is an integer number (7674130590).

Almost surely, 2^40659428438 is an apocalyptic number.

40659428438 is a deficient number, since it is larger than the sum of its proper divisors (20733616282).

40659428438 is a wasteful number, since it uses less digits than its factorization.

40659428438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134634022.

The product of its (nonzero) digits is 6635520, while the sum is 53.

The spelling of 40659428438 in words is "forty billion, six hundred fifty-nine million, four hundred twenty-eight thousand, four hundred thirty-eight".