38921105 has 4 divisors (see below), whose sum is σ = 46705332. Its totient is φ = 31136880.

The previous prime is 38921087. The next prime is 38921117. The reversal of 38921105 is 50112983.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31013761 + 7907344 = 5569^2 + 2812^2 .

It is not a de Polignac number, because 38921105 - 2¹⁶ = 38855569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3892106 + ... + 3892115.

It is an arithmetic number, because the mean of its divisors is an integer number (11676333).

Almost surely, 2^38921105 is an apocalyptic number.

It is an amenable number.

38921105 is a deficient number, since it is larger than the sum of its proper divisors (7784227).

38921105 is an equidigital number, since it uses as much as digits as its factorization.

38921105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7784226.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 38921105 is about 6238.6781452484. The cubic root of 38921105 is about 338.8923150340.

The spelling of 38921105 in words is "thirty-eight million, nine hundred twenty-one thousand, one hundred five".