39791648 has 48 divisors (see below), whose sum is σ = 86460696. Its totient is φ = 17909760.

The previous prime is 39791639. The next prime is 39791659. The reversal of 39791648 is 84619793.

It can be written as a sum of positive squares in 4 ways, for example, as 13454224 + 26337424 = 3668^2 + 5132^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15890 + ... + 18222.

Almost surely, 2^39791648 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 39791648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43230348).

39791648 is an abundant number, since it is smaller than the sum of its proper divisors (46669048).

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

39791648 is a wasteful number, since it uses less digits than its factorization.

39791648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397 (or 2389 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The square root of 39791648 is about 6308.0621430040. The cubic root of 39791648 is about 341.4003605079.

The spelling of 39791648 in words is "thirty-nine million, seven hundred ninety-one thousand, six hundred forty-eight".