39838145 has 8 divisors (see below), whose sum is σ = 47839680. Its totient is φ = 31847920.

The previous prime is 39838129. The next prime is 39838177. The reversal of 39838145 is 54183893.

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

It is not a de Polignac number, because 39838145 - 2⁴ = 39838129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12086 + ... + 15024.

It is an arithmetic number, because the mean of its divisors is an integer number (5979960).

Almost surely, 2^39838145 is an apocalyptic number.

It is an amenable number.

39838145 is a deficient number, since it is larger than the sum of its proper divisors (8001535).

39838145 is a wasteful number, since it uses less digits than its factorization.

39838145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655.

The product of its digits is 103680, while the sum is 41.

The square root of 39838145 is about 6311.7465887027. The cubic root of 39838145 is about 341.5332855005.

It can be divided in two parts, 39 and 838145, that multiplied together give a triangular number (32687655 = T₈₀₈₅).

The spelling of 39838145 in words is "thirty-nine million, eight hundred thirty-eight thousand, one hundred forty-five".