38863805 has 4 divisors (see below), whose sum is σ = 46636572. Its totient is φ = 31091040.

The previous prime is 38863789. The next prime is 38863807. The reversal of 38863805 is 50836883.

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 8514724 + 30349081 = 2918^2 + 5509^2 .

It is not a de Polignac number, because 38863805 - 2⁴ = 38863789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38863807) 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, 3886376 + ... + 3886385.

It is an arithmetic number, because the mean of its divisors is an integer number (11659143).

Almost surely, 2^38863805 is an apocalyptic number.

It is an amenable number.

38863805 is a deficient number, since it is larger than the sum of its proper divisors (7772767).

38863805 is an equidigital number, since it uses as much as digits as its factorization.

38863805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7772766.

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

The square root of 38863805 is about 6234.0841348188. The cubic root of 38863805 is about 338.7259265854.

The spelling of 38863805 in words is "thirty-eight million, eight hundred sixty-three thousand, eight hundred five".