38909407655 has 8 divisors (see below), whose sum is σ = 46970878752. Its totient is φ = 30941133088.

The previous prime is 38909407631. The next prime is 38909407661. The reversal of 38909407655 is 55670490983.

It is a happy number.

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 38909407655 - 2¹⁰ = 38909406631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38909407655.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23298212 + ... + 23299881.

It is an arithmetic number, because the mean of its divisors is an integer number (5871359844).

Almost surely, 2^38909407655 is an apocalyptic number.

38909407655 is a deficient number, since it is larger than the sum of its proper divisors (8061471097).

38909407655 is a wasteful number, since it uses less digits than its factorization.

38909407655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46598265.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 38909407655 in words is "thirty-eight billion, nine hundred nine million, four hundred seven thousand, six hundred fifty-five".