38804945 has 4 divisors (see below), whose sum is σ = 46565940. Its totient is φ = 31043952.

The previous prime is 38804923. The next prime is 38805001. The reversal of 38804945 is 54940883.

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 21307456 + 17497489 = 4616^2 + 4183^2 .

It is a cyclic number.

It is not a de Polignac number, because 38804945 - 2⁶ = 38804881 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3880490 + ... + 3880499.

It is an arithmetic number, because the mean of its divisors is an integer number (11641485).

Almost surely, 2^38804945 is an apocalyptic number.

It is an amenable number.

38804945 is a deficient number, since it is larger than the sum of its proper divisors (7760995).

38804945 is an equidigital number, since it uses as much as digits as its factorization.

38804945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7760994.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 38804945 is about 6229.3615242655. The cubic root of 38804945 is about 338.5548378160.

The spelling of 38804945 in words is "thirty-eight million, eight hundred four thousand, nine hundred forty-five".