39489841 has 4 divisors (see below), whose sum is σ = 40557172. Its totient is φ = 38422512.

The previous prime is 39489829. The next prime is 39489887. The reversal of 39489841 is 14898493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14898493 = 1307 ⋅11399.

It can be written as a sum of positive squares in 2 ways, for example, as 32729841 + 6760000 = 5721^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 39489841 - 2¹³ = 39481649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39489791 and 39489800.

It is not an unprimeable number, because it can be changed into a prime (39489811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533610 + ... + 533683.

It is an arithmetic number, because the mean of its divisors is an integer number (10139293).

Almost surely, 2^39489841 is an apocalyptic number.

It is an amenable number.

39489841 is a deficient number, since it is larger than the sum of its proper divisors (1067331).

39489841 is a wasteful number, since it uses less digits than its factorization.

39489841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067330.

The product of its digits is 248832, while the sum is 46.

The square root of 39489841 is about 6284.0942863709. The cubic root of 39489841 is about 340.5350313240.

The spelling of 39489841 in words is "thirty-nine million, four hundred eighty-nine thousand, eight hundred forty-one".