38920917 has 8 divisors (see below), whose sum is σ = 59308096. Its totient is φ = 22240512.

The previous prime is 38920909. The next prime is 38920927. The reversal of 38920917 is 71902983.

38920917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 38920917 - 2³ = 38920909 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 (38920907) 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 7 ways as a sum of consecutive naturals, for example, 926668 + ... + 926709.

It is an arithmetic number, because the mean of its divisors is an integer number (7413512).

Almost surely, 2^38920917 is an apocalyptic number.

It is an amenable number.

38920917 is a deficient number, since it is larger than the sum of its proper divisors (20387179).

38920917 is a wasteful number, since it uses less digits than its factorization.

38920917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853387.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 38920917 is about 6238.6630779358. The cubic root of 38920917 is about 338.8917693844.

The spelling of 38920917 in words is "thirty-eight million, nine hundred twenty thousand, nine hundred seventeen".