38390863 has 6 divisors (see below), whose sum is σ = 44658816. Its totient is φ = 32906412.

The previous prime is 38390843. The next prime is 38390909. The reversal of 38390863 is 36809383.

38390863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38390863 - 2⁵ = 38390831 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 (38390813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 391695 + ... + 391792.

It is an arithmetic number, because the mean of its divisors is an integer number (7443136).

Almost surely, 2^38390863 is an apocalyptic number.

38390863 is a deficient number, since it is larger than the sum of its proper divisors (6267953).

38390863 is an equidigital number, since it uses as much as digits as its factorization.

38390863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783501 (or 783494 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 38390863 is about 6196.0360715541. The cubic root of 38390863 is about 337.3463055111.

The spelling of 38390863 in words is "thirty-eight million, three hundred ninety thousand, eight hundred sixty-three".