38307109 has 4 divisors (see below), whose sum is σ = 39198016. Its totient is φ = 37416204.

The previous prime is 38307091. The next prime is 38307133. The reversal of 38307109 is 90170383.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90170383 = 61 ⋅1478203.

It is a cyclic number.

It is not a de Polignac number, because 38307109 - 2¹⁹ = 37782821 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 (38397109) 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, 445389 + ... + 445474.

It is an arithmetic number, because the mean of its divisors is an integer number (9799504).

Almost surely, 2^38307109 is an apocalyptic number.

It is an amenable number.

38307109 is a deficient number, since it is larger than the sum of its proper divisors (890907).

38307109 is an equidigital number, since it uses as much as digits as its factorization.

38307109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890906.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 38307109 is about 6189.2737053713. The cubic root of 38307109 is about 337.1008072188.

It can be divided in two parts, 38307 and 109, that added together give a 4-th power (38416 = 14⁴).

The spelling of 38307109 in words is "thirty-eight million, three hundred seven thousand, one hundred nine".