39489648 has 80 divisors (see below), whose sum is σ = 115171200. Its totient is φ = 11549440.

The previous prime is 39489647. The next prime is 39489679. The reversal of 39489648 is 84698493.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 39489648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39489647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14023 + ... + 16601.

It is an arithmetic number, because the mean of its divisors is an integer number (1439640).

Almost surely, 2^39489648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39489648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57585600).

39489648 is an abundant number, since it is smaller than the sum of its proper divisors (75681552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39489648 is a wasteful number, since it uses less digits than its factorization.

39489648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630 (or 2624 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 39489648 is about 6284.0789301217. The cubic root of 39489648 is about 340.5344765537.

The spelling of 39489648 in words is "thirty-nine million, four hundred eighty-nine thousand, six hundred forty-eight".