38859209 has 4 divisors (see below), whose sum is σ = 38997780. Its totient is φ = 38720640.

The previous prime is 38859187. The next prime is 38859211. The reversal of 38859209 is 90295883.

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 31047184 + 7812025 = 5572^2 + 2795^2 .

It is a cyclic number.

It is not a de Polignac number, because 38859209 - 2¹⁶ = 38793673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38859209.

It is not an unprimeable number, because it can be changed into a prime (38859109) 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, 68864 + ... + 69425.

It is an arithmetic number, because the mean of its divisors is an integer number (9749445).

Almost surely, 2^38859209 is an apocalyptic number.

It is an amenable number.

38859209 is a deficient number, since it is larger than the sum of its proper divisors (138571).

38859209 is a wasteful number, since it uses less digits than its factorization.

38859209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138570.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 38859209 is about 6233.7155052184. The cubic root of 38859209 is about 338.7125735806.

The spelling of 38859209 in words is "thirty-eight million, eight hundred fifty-nine thousand, two hundred nine".