38916905 has 8 divisors (see below), whose sum is σ = 47041992. Its totient is φ = 30905728.

The previous prime is 38916887. The next prime is 38916967. The reversal of 38916905 is 50961983.

It can be written as a sum of positive squares in 4 ways, for example, as 16297369 + 22619536 = 4037^2 + 4756^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38916905 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27722 + ... + 29091.

It is an arithmetic number, because the mean of its divisors is an integer number (5880249).

Almost surely, 2^38916905 is an apocalyptic number.

It is an amenable number.

38916905 is a deficient number, since it is larger than the sum of its proper divisors (8125087).

38916905 is a wasteful number, since it uses less digits than its factorization.

38916905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56955.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 38916905 is about 6238.3415263995. The cubic root of 38916905 is about 338.8801245705.

The spelling of 38916905 in words is "thirty-eight million, nine hundred sixteen thousand, nine hundred five".